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)
CI: Fix race condition when building docker on main (#77504)
* build docker after packages are updated
* use my branch for main pipelines for testing
* use my branch for main pipelines for testing
* use main instead now
* formatting
(cherry picked from commit f6d3238505)
* CI: Update CI/CD tooling and pipelines from main
* Update Makefile
* Comment out validate_openapi_spec_step
* Update broken frontend tests
* Fix validate-npm-packages regex to work without suffix
* Fix cypress image version
Victor Marin
Timur Olzhabayev
Kevin Minehart
Guilherme Caulada