chore: update .nycrc

[yoshi-automation]

This PR was generated using Autosynth. :rainbow:

Log from Synthtool

``` synthtool > Executing /tmpfs/src/git/autosynth/working_repo/synth.py. .eslintignore .eslintrc.yml .github/ISSUE_TEMPLATE/bug_report.md .github/ISSUE_TEMPLATE/feature_request.md .github/ISSUE_TEMPLATE/support_request.md .github/PULL_REQUEST_TEMPLATE.md .github/release-please.yml .jsdoc.js .kokoro/common.cfg .kokoro/continuous/node10/common.cfg .kokoro/continuous/node10/docs.cfg .kokoro/continuous/node10/lint.cfg .kokoro/continuous/node10/samples-test.cfg .kokoro/continuous/node10/system-test.cfg .kokoro/continuous/node10/test.cfg .kokoro/continuous/node12/common.cfg .kokoro/continuous/node12/test.cfg .kokoro/continuous/node8/common.cfg .kokoro/continuous/node8/test.cfg .kokoro/docs.sh .kokoro/lint.sh .kokoro/presubmit/node10/common.cfg .kokoro/presubmit/node10/docs.cfg .kokoro/presubmit/node10/lint.cfg .kokoro/presubmit/node10/samples-test.cfg .kokoro/presubmit/node10/system-test.cfg .kokoro/presubmit/node10/test.cfg .kokoro/presubmit/node12/common.cfg .kokoro/presubmit/node12/test.cfg .kokoro/presubmit/node8/common.cfg .kokoro/presubmit/node8/test.cfg .kokoro/presubmit/windows/common.cfg .kokoro/presubmit/windows/test.cfg .kokoro/publish.sh .kokoro/release/docs.cfg .kokoro/release/docs.sh .kokoro/release/publish.cfg .kokoro/samples-test.sh .kokoro/system-test.sh .kokoro/test.bat .kokoro/test.sh .kokoro/trampoline.sh .nycrc .prettierignore .prettierrc CODE_OF_CONDUCT.md CONTRIBUTING.md LICENSE README.md codecov.yaml renovate.json samples/README.md synthtool > Removing obsolete file .git/objects/6a/c32e652ef7177b0fb6fdc55798ca6444dac157... synthtool > Removing obsolete file .git/objects/48/d820355b08c78acc75c1472965f8a265d67aca... synthtool > Removing obsolete file .git/objects/c7/bbb9b231a6dfcc2e894bf31ddced56677e7b05... synthtool > Removing obsolete file .git/objects/ce/e734682b73a6af75b22c7b634627222d734501... synthtool > Removing obsolete file .git/objects/a7/ee17d47c8d63a63fc97caa1fe90ad75be0b44f... synthtool > Removing obsolete file .git/objects/6d/b2a46c5358b1b3817ceb48a9356b48a7c7e150... synthtool > Removing obsolete file .git/objects/be/99af96b023340dd2d9fa943d180e9eaaf73548... synthtool > Removing obsolete file .git/objects/95/2f16b4e85c9aa80a62a61ce7162f15810064a9... synthtool > Removing obsolete file .git/objects/ca/acac9fdfdebfeb4b187ed66e53274989b3892c... synthtool > Removing obsolete file .git/objects/cd/de095f376f1ed8c8f91545074899d224fa4587... synthtool > Removing obsolete file .git/objects/ce/4abbd1b87bfc1159341fff38426ffc45983694... synthtool > Removing obsolete file .git/objects/ab/98ad29232cbcf2298805de92d8cb2ef1e369f5... synthtool > Removing obsolete file .git/objects/0a/a37ac630e286f6364d9d7b4bd2f4eac18e1e5b... synthtool > Removing obsolete file .git/objects/e4/d0991301b1938bf5d6967d0fdeb89d42204b0d... synthtool > Removing obsolete file .git/objects/5c/33c5fc0e3d6c2c5660bcc6a8fc2b46fe4add22... synthtool > Removing obsolete file samples/system-test/.eslintrc.yml... synthtool > Removing obsolete file .git/objects/be/a09fb9afc073b85344e4e54562298da3ea9eb9... synthtool > Removing obsolete file .git/objects/26/1acd316a61c6e525eb3db43ecba5e147719d77... synthtool > Removing obsolete file .git/objects/16/be2d2bb104e174674a236796fa274631de4040... synthtool > Removing obsolete file .git/objects/57/03274a46b2e280278cef20a576a94c1e711acc... synthtool > Wrote metadata to synth.metadata. ```

[codecov[bot]]

Codecov Report

Merging #393 into master will increase coverage by 32.79%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #393       +/-   ##
==========================================
+ Coverage    64.3%   97.1%   +32.79%     
==========================================
  Files           4       2        -2     
  Lines         678     449      -229     
  Branches       37      37               
==========================================
  Hits          436     436               
+ Misses        242      13      -229

Impacted Files	Coverage Δ
src/types/global.d.ts
src/types/core.d.ts

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update c587cb2...49eaba3. Read the comment docs.