Bump pyyaml from 5.1.2 to 5.4 in /testing/raptor

Bumps pyyaml from 5.1.2 to 5.4.

Changelog

5.4 (2021-01-19)

yaml/pyyaml#407 -- Build modernization, remove distutils, fix metadata, build wheels, CI to GHA

yaml/pyyaml#472 -- Fix for CVE-2020-14343, moves arbitrary python tags to UnsafeLoader

yaml/pyyaml#441 -- Fix memory leak in implicit resolver setup

yaml/pyyaml#392 -- Fix py2 copy support for timezone objects

yaml/pyyaml#378 -- Fix compatibility with Jython

5.3.1 (2020-03-18)

yaml/pyyaml#386 -- Prevents arbitrary code execution during python/object/new constructor

5.3 (2020-01-06)

yaml/pyyaml#290 -- Use is instead of equality for comparing with None

yaml/pyyaml#270 -- Fix typos and stylistic nit

yaml/pyyaml#309 -- Fix up small typo

yaml/pyyaml#161 -- Fix handling of slots

yaml/pyyaml#358 -- Allow calling add_multi_constructor with None

yaml/pyyaml#285 -- Add use of safe_load() function in README

yaml/pyyaml#351 -- Fix reader for Unicode code points over 0xFFFF

yaml/pyyaml#360 -- Enable certain unicode tests when maxunicode not > 0xffff

yaml/pyyaml#359 -- Use full_load in yaml-highlight example

yaml/pyyaml#244 -- Document that PyYAML is implemented with Cython

yaml/pyyaml#329 -- Fix for Python 3.10

yaml/pyyaml#310 -- Increase size of index, line, and column fields

yaml/pyyaml#260 -- Remove some unused imports

yaml/pyyaml#163 -- Create timezone-aware datetimes when parsed as such

yaml/pyyaml#363 -- Add tests for timezone

5.2 (2019-12-02)

Repair incompatibilities introduced with 5.1. The default Loader was changed, but several methods like add_constructor still used the old default yaml/pyyaml#279 -- A more flexible fix for custom tag constructors yaml/pyyaml#287 -- Change default loader for yaml.add_constructor yaml/pyyaml#305 -- Change default loader for add_implicit_resolver, add_path_resolver

Make FullLoader safer by removing python/object/apply from the default FullLoader yaml/pyyaml#347 -- Move constructor for object/apply to UnsafeConstructor

Fix bug introduced in 5.1 where quoting went wrong on systems with sys.maxunicode <= 0xffff yaml/pyyaml#276 -- Fix logic for quoting special characters

Other PRs: yaml/pyyaml#280 -- Update CHANGES for 5.1

Commits

58d0cb7 5.4 release
a60f7a1 Fix compatibility with Jython
ee98abd Run CI on PR base branch changes
ddf2033 constructor.timezone: _copy & deepcopy
fc914d5 Avoid repeatedly appending to yaml_implicit_resolvers
a001f27 Fix for CVE-2020-14343
fe15062 Add 3.9 to appveyor file for completeness sake
1e1c7fb Add a newline character to end of pyproject.toml
0b6b7d6 Start sentences and phrases for capital letters
c976915 Shell code improvements
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SAP / project-foxhound

Bump pyyaml from 5.1.2 to 5.4 in /testing/raptor #136

5.2 (2019-12-02)