Pin dependencies

[renovate-pagopa[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	pinDigest	-> ee0669b
actions/stale	action	pinDigest	-> 98ed4cb
italia/publiccode-parser-action	action	pinDigest	-> 3244a5a

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[!WARNING] Some dependencies could not be looked up. Check the warning logs for more information.

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