refactor: rename globalCache to packageCache (#6580)

lib/datasource/cache.ts

lib/datasource/crate/index.ts

lib/datasource/docker/index.ts

lib/datasource/galaxy/index.ts

lib/datasource/git-refs/index.ts

lib/datasource/git-submodules/index.ts

lib/datasource/github-releases/index.ts

lib/datasource/github-tags/index.ts

lib/datasource/gitlab-tags/index.ts

lib/datasource/helm/index.ts

lib/datasource/maven/index.ts

lib/datasource/npm/get.ts

lib/datasource/nuget/v3.ts

lib/datasource/orb/index.ts

lib/datasource/packagist/index.ts

lib/datasource/pod/index.ts

lib/datasource/repology/index.ts

lib/datasource/ruby-version/index.ts

lib/datasource/terraform-module/index.ts

lib/manager/bazel/update.ts