Update dependency lighthouse to v3.1.1

This Pull Request updates devDependency lighthouse (source) from v3.0.3 to v3.1.1

Release Notes

`v3.1.1`

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update report score legend to match updated color buckets (#5985)

`v3.1.0`

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New Contributors!

Huge thanks to @midzer and @justinribeiro for being so darn helpful. Great stuff. :D

And thanks to @mettamatt for some helpful documentation. Who doesn't love better docs?!

Notable changes

red/orange/green color buckets for scores are tougher now. (#5831)

	Previously	Now
Red (bad)	0-44	0-49
Orange (average)	45-74	50-89
Green (good)	75-100	90-100

Scoring itself hasn't changed; only what color is used to decorate a score.

trace-processor: fix bug where top-level events weren't being found in the trace (#5841)

Core

normalize URL before checking equality (#5960)
expose LighthouseRunWarnings on audit context (#5684)
adjust audit titles for consistency (#5717)
export any page-functions as string (#5902)
all ByteEfficiency audits require a trace (#5840)
enhanced noopener output (#5857)
errors: class rename and re-source page load errors (#5972)
fix defaultConfig UIStrings and exit code for test (#5884)
remove last debugString references (#5856)
redirects: update redirects to use OpportunityDetails (#5791)
warn when extensions affected perf (#5666)
driver: handle when page redefines global.URL (#5748)
gather-runner: call clearDataForOrigin on teardown (#5933)
lhr: expose environment info (#5871)
lr: add LR presets for desktop and mobile (#5886)
lr: drop maxWaitForLoad 45 -> 35 (#5938)
network: handle LR transferSize (#5895)
network-analyzer: infer RTT from receiveHeadersEnd (#5694)
optimized-images: support non-standard mime types (#5688)
preload: remove CRC dependency (#5901)
screenshot-thumbnails: improve caching (#5976)
ttfb: reuse requestMainResource (#5657)
trace-of-tab: only use navstart of chrome/http documents (#5917)
tracing-processor: throw on no top level events (#5878)
uses-long-cache-ttl: handle multiple cache-control headers (#5745)

Extension

access core through module instead of Runner (#5855)
tweak runLighthouseAsInCLI jsdoc (#5812)
refactor option/flag passing (breaking change) (#5769)
remove X-UA-Compatible meta (#5739)
popup: keep feedback class (#5872)

i18n

add i18n 'type' for prlint (#5880)
minor message and description changes based on translator feedback (#5829)
reframe the ICU message descriptions with placeholders (#5737)
export rendererFormattedStrings (#5713)
extract performance category strings to UIStrings (#5716)
always use english for status logs (#5727)
add 'ln' locale which maps to 'fr' (#5879)
support descriptions (#5718)
add [ICU Syntax] label to relevant message descriptions (#5736)
import psuedo-locale json from TC (#5726)
incorporate 52 languages into messages pipeline (#5781)
add descriptions to UI strings (#5743)
add strings of the opportunity group split (first paint, overall) (#5744)
add locale fallback when language not supported (#5746)
localize strings at end of run (#5655)
always use formatted strings for extension popup (#5761)
add strings for user timing entries table (#5806)
sort the ICU messages when saved (#5771)
roll latest TC messages (#5802)
add localized messages for 52 locales (#5780)
add assertion script (#5686)
report: use LHR locale for toLocaleString (#5734)
report: localize CRC renderer strings (#5730)

Types

don't use index signature in LHErrors (#5896)
type check config files (#5858)
don't use index signature in simulator.js (#5897)
update debugger protocol type checking (#5836)
remove more reliance on implicit index signatures (#5874)
update types in emulation.js (#5830)
tighten traceOfTab timing types (#5887)
update to ts 3.1 to support new protocol defs (#5942)
update to latest tsc (#5581)
NetworkRequest.RESOURCE_TYPES type fix (#5851)
add explicit index signature in mainthread-work-breakdown (#5859)
cli: make LH.Flags type correct and consistent (#5849)

Report

link to our own "unused css" reference doc (#5698)
expose prepareLabData directly as a fn (#5818)
responsive styles (#5706)
add PSI.prepareLabData() (#5804)
adopt 80-char line-length license (#5757)
add method to get the final screenshot (#5673)
metrics: display metrics in seconds (#5914)
psi: add Util.prepareReportResult method (#5766)
psi: reset template styles on every call of prepareLabData (#5877)
psi: add lab data summary sentence (#5961)

New Audits

a11y: add manual audit for interactive element affordance (#5764)

Tests

quiet down collect-scripts during CI (#5801)
better display value tests with i18n (#5720)
dbw: remove createShadowRoot call (#5906)
jest: disable coverage collection by default (#5772)
smokehouse: update expectations for HTML Imports deprecation (#5943)
smokehouse: update passive listener expectations (#5899)

Deps

snyk: update snyk snapshot (#5774), (#5773), (#5762), (#5691)
depend on speedline-core, rather than the cli (#5800)

Docs

headless: Require Node 8 and apt install chromium (#5974)
headless: example script to post report as gist (#5975)\
integrations: Add SpeedCurve to "Lighthouse Integrations" (#5732)
link FCP audit description to lighthouse docs (#5850)
puppeteer: remove appMode mention (#5923)
readme: mention chrome-flags troubleshooting in getting started (#5916)
report: add a renderer readme (#5725)
scoring: http2 redirect PWA score issue (#5929)

Misc

cli: enableErrorReporting must be undefined by default (#5854)
asset-saver: tweak output format of logAssets (#5696)
logger: add time/timeEnd methods (#5905)
fix grocers apostrophe typo (API's v APIs) (#5948)

This PR has been generated by Renovate Bot.

Pigmice2733 / scouting-frontend

Update dependency lighthouse to v3.1.1 #312