[Snyk] Security upgrade gatsby from 2.13.73 to 2.18.10

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

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Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • deps/npm/docs/package.json
  • deps/npm/docs/package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Issue	Breaking Change	Exploit Maturity
	Arbitrary Code Injection SNYK-JS-SERIALIZEJAVASCRIPT-570062	No	Proof of Concept

Commit messages

Package name: gatsby

The new version differs by 250 commits.

• a9e4046 chore(release): Publish
• 45c78b6 chore(release): Publish
• b05ff0a chore(showcase): Add 8fit.com to sites.yml (net: why net.Socket's property without pid info nodejs/node#20032)
• a8457f1 Revert "feat(gatsby): use embedded remote schemas ([v9.x backport] test: introduce SetUpTestCase/TearDownTestCase nodejs/node#19504)" (lib: fix coverage reporting nodejs/node#20035)
• 43949c4 Add the "Documentation" tag to React website (build: Accept optional name argument with make install? nodejs/node#20033)
• 010cd6d chore: update minor updates in packages (errors: pass missing message parameter to internalAssert nodejs/node#19908)
• 222ef00 Update yarn.lock (doc: added explicitly that the close event does not take arguments nodejs/node#20031)
• 07e4b11 Add config for gatsby-transformer-remark (src: use non-deprecated V8 microtasks API nodejs/node#18753)
• e997f4a Update docs unit testing typescript (can't use NPM  nodejs/node#19023)
• a898a77 feat(gatsby): support nullish coalescing operator in gatsby (Duplicated stack trace nodejs/node#20010)
• 9227977 chore(deps): bump terser-webpack-plugin to v.1.4.2 (http2: respondWithFile/respondWithFD events and stream API interaction nodejs/node#20014)
• 6b67d30 Moves responsive image CSS back into attribute (child_process.fork method & unicode characters nodejs/node#19888)
• 91bed4c chore(showcase): Remove unionpluscard.com (Redacted nodejs/node#20012)
• d001f10 chore(showcase): Remove Smoopit (Investigate flaky parallel/test-http-server-keep-alive-timeout nodejs/node#20013)
• 330c395 chore(showcase): Add samirmujanovic.com portfolio (src: limit foreground tasks draining loop nodejs/node#19987)
• ecca824 chore(docs): Update the "Gatsby on Linux" page (test: fix flaky cluster unix socket test nodejs/node#18263)
• c732247 refactor(gatsby): Introduce built-in GraphQL types (doc: replace unneeded snake cases nodejs/node#19951)
• 0e9553e chore(release): Publish
• cfd4782 chore(showcase): add Bearer.sh (doc: fix typo in README nodejs/node#20011)
• 35035af chore: lint all shell scripts (potential null pointer deref? nodejs/node#19991)
• 588eaf7 feat(gatsby): use embedded remote schemas ([v9.x backport] test: introduce SetUpTestCase/TearDownTestCase nodejs/node#19504)
• 06e650d fix(gatsby-theme-blog): Fix home-footer in Night mode (Degradation of performance console.log on master nodejs/node#19977)
• 3a90f78 chore(showcase): Updated screenshot URL for Gearbox (deps: update V8 to 6.7 nodejs/node#19989)
• e9c91fa chore(starters): add gatsby-starter-keturah (Node REPL does not honor uncaughtException listeners nodejs/node#19998)

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