v4.16.3

What's Changed

• fix(web): center chat box on Ask GitHub landing page by @msukkari in #1046
• feat(web): support .gitattributes linguist-language overrides in file viewer by @brendan-kellam in #1048
• fix(worker): skip non-directory paths in file-based git connection config by @brendan-kellam in #1049
• fix(web): treat parens and | as word chars when regex mode is enabled by @brendan-kellam in #1050
• docs: add GCP IAP to external identity providers documentation by @msukkari in #1051
• feat(web): add Basic language support in file viewer by @brendan-kellam in #1054

Full Changelog: v4.16.2...v4.16.3