feat: replace datasource constants with IDs (#5595)

lib/config/env.ts

lib/constants/data-binary-source.ts

lib/datasource/__snapshots__/index.spec.ts.snap

lib/datasource/cargo/index.ts

lib/datasource/cdnjs/index.ts

lib/datasource/dart/index.ts

lib/datasource/docker/index.spec.ts

lib/datasource/docker/index.ts

lib/datasource/galaxy/index.ts

lib/datasource/git-submodules/index.ts

lib/datasource/git-tags/index.ts

lib/datasource/github-releases/index.ts

lib/datasource/github-tags/index.ts

lib/datasource/gitlab-tags/index.ts

lib/datasource/go/index.ts

lib/datasource/gradle-version/index.ts

lib/datasource/helm/index.ts

lib/datasource/hex/index.ts

lib/datasource/index.spec.ts

lib/datasource/index.ts