dependency: bump @apollo/client from 3.4.11 to 3.4.12

Bumps @apollo/client from 3.4.11 to 3.4.12.

Changelog

Sourced from @​apollo/client's changelog.

Apollo Client 3.4.12

Bug Fixes

• Improve handling of falsy existing and/or incoming parameters in relayStylePagination field policy helper function. @​bubba and @​benjamn in #8733

• Associate Apollo context with React.createContext (instead of using a local WeakMap) again, so multiple copies of @apollo/client (uncommon) can share the same context. @​benjamn in #8798

Commits

• 3842e9e Bump @​apollo/client npm version to 3.4.12.
• 57a5ce3 Remove stray debugger statement from StoreWriter tests.
• 6aabfc7 Associate Apollo React context with React.createContext again (#8798)
• 96ea2a1 chore(deps): update dependency gatsby-theme-apollo-docs to v5.0.1
• 46cfeb1 Fix Windows path separator bug in config/resolveModuleIds.ts (#8792)
• 72afc14 Pin CircleCI container to cimg/node:16.8 until 16.9.1 available. (#8800)
• 469f995 Use Array.prototype.forEach instead of map in link docs (#8796)
• d3c7218 Improve handling of falsy existing and/or incoming parameters in `relaySt...
• b49b23a chore(deps): update dependency serve to v12.0.1 (#8774)
• 2c0088f Measure bundlesize using @apollo/client root package again.
• Additional commits viewable in compare view