Commit tag `[ci fast]` is not working anymore

[pditommaso]

Bug report

When tagging a commit with [ci fast] integration tests should be skipped, however it looks like they run in any case

https://github.com/nextflow-io/nextflow/blob/115a39e9df654be835b4c20ede4f6594b5608d47/.github/workflows/build.yml#L111-L111