fix(ci): resolve input str -> num conversion

[Borda]

What does this PR do?

addresses failing manual cache cleaning as we have too many cumulated packages making the runners crash, https://github.com/Lightning-AI/pytorch-lightning/actions/runs/10265253757

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📚 Documentation preview 📚: https://pytorch-lightning--20169.org.readthedocs.build/en/20169/

cc @Borda @carmocca

[github-actions]

⚡ Required checks status: All passing 🟢

No groups match the files changed in this PR.

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Thank you for your contribution! 💜

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