Bump nyc from 14.1.1 to 15.0.0

[dependabot-preview]

Bumps nyc from 14.1.1 to 15.0.0.

Changelog

Sourced from nyc's changelog.

15.0.0 (2019-12-20)

⚠ BREAKING CHANGES

• The flow and jsx parser plugins are no longer enabled by default.
• Node.js 8 is now required to run nyc
• Remove NYC_ROOT_ID and NYC_INSTRUMENTER environmental variables.
• The root field has been removed from processinfo files.

Features

• Add --use-spawn-wrap=true option (#1169) (df4de4d)
• Add .cjs, .mjs, .ts, .tsx, .jsx to default extensions (#1110) (914b776), closes #1103
• Allow nyc instrument to instrument code in place (#1149) (7783284)
• Drop node.js 6, upgrade dependencies (#1134) (00c3b34)
• Filenames relative to project cwd in coverage reports (#1212) (5258e9f)
• Use @istanbuljs/schema for yargs setup (#1194) (fd40d49)
• Use istanbul-lib-processinfo (#1145) (7943413)
• Use source base name to prefix cache files (#1144) (5c1b7a9)

Bug Fixes

• Avoid source-map module during signal-exit handler (#1191) (83eb629)
• Better error handling for main execution, reporting (#1229) (dfd629d)
• Correct handling of source-maps for pre-instrumented files (#1216) (8411a26), closes #1208
• Drop coverage produced by nyc --all for files that were tested (#1155) (fc1bbbf), closes #1113 #1124 #1148
• Honor eager setting (false by default) (#1179) (c18fb0a)
• Remove vestigial environment variables (#1078) (cfd3da0)

Commits

• bebf4d6 chore(release): 15.0.0
• 2931730 chore: Update to final releases of dependencies (#1245)
• d44ff19 chore: Update node-preload and use process-on-spawn (#1243)
• 5258e9f feat: Filenames relative to project cwd in coverage reports (#1212)
• 6039f29 chore: Unpin test-exclude, update to latest pre-releases (#1240)
• f3c9e6c chore: Temporarily pin test-exclude (#1239)
• 28ed746 chore: Lazy load modules that are rarely/never needed in test processes. (#1232)
• 7307626 chore: Remove cp-file module (#1230)
• dfd629d fix: Better error handling for main execution, reporting (#1229)
• 549c953 chore: Update dependencies, pin find-cache-dir (#1228)
• Additional commits viewable in compare view

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