chore(deps): update dependency @edx/frontend-build to v12.8.16

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@edx/frontend-build	12.8.10 -> 12.8.16

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Release Notes

openedx/frontend-build

### [`v12.8.16`](https://togithub.com/openedx/frontend-build/releases/tag/v12.8.16) [Compare Source](https://togithub.com/openedx/frontend-build/compare/v12.8.15...v12.8.16) ##### Bug Fixes - **deps:** update dependency sass to v1.62.1 ([d31d8d4](https://togithub.com/openedx/frontend-build/commit/d31d8d457dd539fb3b3de75499f5af53e805268e)) ### [`v12.8.15`](https://togithub.com/openedx/frontend-build/releases/tag/v12.8.15) [Compare Source](https://togithub.com/openedx/frontend-build/compare/v12.8.14...v12.8.15) ##### Bug Fixes - **deps:** update dependency webpack-dev-server to v4.13.3 ([691d176](https://togithub.com/openedx/frontend-build/commit/691d1765de87e80ebd989f35ee3928429b3322b4)) ### [`v12.8.14`](https://togithub.com/openedx/frontend-build/releases/tag/v12.8.14) [Compare Source](https://togithub.com/openedx/frontend-build/compare/v12.8.13...v12.8.14) ##### Bug Fixes - **deps:** update dependency webpack-cli to v5.0.2 ([a35a129](https://togithub.com/openedx/frontend-build/commit/a35a12936fffafa902b56d2b5d088f34bf2f3d0f)) ### [`v12.8.13`](https://togithub.com/openedx/frontend-build/releases/tag/v12.8.13) [Compare Source](https://togithub.com/openedx/frontend-build/compare/v12.8.12...v12.8.13) ##### Bug Fixes - **deps:** update dependency postcss to v8.4.23 ([f39fbdb](https://togithub.com/openedx/frontend-build/commit/f39fbdbe7fa21c345627892807b9b9b4d95ac2c4)) ### [`v12.8.12`](https://togithub.com/openedx/frontend-build/releases/tag/v12.8.12) [Compare Source](https://togithub.com/openedx/frontend-build/compare/v12.8.11...v12.8.12) ##### Bug Fixes - **deps:** update dependency html-webpack-plugin to v5.5.1 ([6460083](https://togithub.com/openedx/frontend-build/commit/6460083c9c3850b0a23259346a05654f56ade754)) ### [`v12.8.11`](https://togithub.com/openedx/frontend-build/releases/tag/v12.8.11) [Compare Source](https://togithub.com/openedx/frontend-build/compare/v12.8.10...v12.8.11) ##### Bug Fixes - **deps:** update dependency cssnano to v6 ([#​344](https://togithub.com/openedx/frontend-build/issues/344)) ([922597b](https://togithub.com/openedx/frontend-build/commit/922597b26b6dce2efac9c10b82e33e164666c327))

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