Chore: Upgrade Go to 1.21.5 (#79329)
* bumping grafanas go version to 1.21.5
* adding how to upgrade go doc
* removing the whole ci-build and corresponding pipelines
* clarifying that we have to run make drone
* fixing starlark linter and removing unused code
* Adding note about enterprise
* trying to change the underyling image to avoid musl issues
* only need to golang one
(cherry picked from commit 4991e71b85)
* add explicit build step for go codeql
* support workflow_dispatch for codeql checks
* syntax fix
* enable on push to codeql-go branch
* test
* use go version from go.mod
* explicitly set go version
* tidy up, add workflow_dispatch support to all codeql actions
* Do not run CodeQL analysis when updating .cue file
* Remove autobuild step for CodeQL workflow as unecessary
* Add specialized CodeQL workflow
* Updated main CodeQL workflow to not run on PRs
* Simplify CodeQL analysis on PR
* Add .tsx file format to JS CodeQL analysis match