feat: rename github/gitlab datasources (#5581)

lib/constants/data-binary-source.ts

lib/datasource/common.ts

...tasource/github-releases/__snapshots__/index.spec.ts.snap

lib/datasource/github-releases/index.spec.ts

lib/datasource/github-releases/index.ts

lib/datasource/github-tags/__snapshots__/index.spec.ts.snap

lib/datasource/github-tags/index.spec.ts

lib/datasource/github-tags/index.ts

lib/datasource/gitlab-tags/__snapshots__/index.spec.ts.snap

lib/datasource/gitlab-tags/index.spec.ts

lib/datasource/gitlab-tags/index.ts

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

lib/datasource/go/index.spec.ts

lib/datasource/go/index.ts

lib/datasource/index.spec.ts

lib/datasource/metadata.ts

lib/datasource/readme.md

lib/manager/bazel/__snapshots__/extract.spec.ts.snap

lib/manager/bazel/extract.ts

lib/manager/buildkite/__snapshots__/extract.spec.ts.snap