feat: improve the github actions run and cancel in progress job

[vinitkumar]

This will allow the jobs to be canceled in case a new commit is made on a same branch where the jobs are already running. This is a good optimization to make the tests run on the latest commit, rather than running many jobs for every commit and push.

Authored-by: Vinit Kumar [email protected]

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📚 Documentation preview 📚: https://datasette--2585.org.readthedocs.build/en/2585/