vercel@21.3.0

• [cli] Use inspectorUrl from api (#5904) [@mglagola]
• [cli] Replace now.sh tests with vercel.app [@mglagola]
• [cli] Implement generic announcement system (#5697) [@anatrajkovska]
• [cli] Use sleep() util function in vc dev (#5784) [@TooTallNate]
• [cli] Use POST /projects for vc projects add (#5824) [@lucleray]
• [build-utils] Fix warning for canary (#5892) [@styfle]
• [build-utils] Update warning for api + pages/api (#5888) [@styfle]
• [build-utils] Update Node.js 10 deprecation message (#5881) [@styfle]
• [build-utils][cli] Fix frameworks usage (#5811) [@TooTallNate]
• [build-utils] Remove flags from bundle install (#5865) [@styfle]
• [build-utils] Fix glob to find symlinks pointing to a directory (#5870) [@nkzawa]
• [build-utils] Inherit process.env when runPackageJsonScript() is invoking yarn (#5841) [@TooTallNate]
• [build-utils] Fix unit tests from @vercel/frameworks type change (#5829) [@TooTallNate]
• [frameworks] Add cachePattern to jekyll and middleman (#5862) [@styfle]
• [frameworks][examples] Update RedwoodJS to 0.25.0 (#5842) [@styfle]
• [frameworks] Fix "zola" framework detection (#5844) [@TooTallNate]
• [frameworks] Add "detectors" for Zola framework (#5843) [@TooTallNate]
• [frameworks] Add defaultVersion field (#5839) [@TooTallNate]
• [frameworks] Restore correct order of frameworks for detection (#5828) [@TooTallNate]
• [frameworks] Add type annotations (#5819) [@TooTallNate]
• [frameworks] Add test case to ensure all "demo" URLs are public Vercel deployments (#5818) [@TooTallNate]
• [frameworks] Export frameworks array with as const (#5817) [@TooTallNate]
• [frameworks] Convert to TypeScript (#5740) [@TooTallNate]
• [go] Add Go version selection via go.mod (#5873) [@styfle]
• [go] Update to version 1.16 (#5858) [@styfle]
• [routing-utils] add user boolean prop to route schema (#5788) [@coetry]
• [examples] Fix "nuxtjs" example by adding a yarn.lock file (#5882) [@TooTallNate]
• [examples] Update jekyll and middleman (#5871) [@styfle]
• [examples][tests] Update "gridsome" and "hexo" for Node 14 (#5802) [@TooTallNate]
• [tests] Update 502 to 504 for Serverless Function timeout (#5874) [@dav-is]
• [tests] Disable Next.js gif test and Node.js 10 tests (#5867) [@styfle]
• [tests] Add test for animated gif bypass (#5851) [@styfle]
• [tests] Add --network-timeout 1000000 to yarn install (#5840) [@TooTallNate]