chore(deps): pin dependencies

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
ChristophWurst/setup-nextcloud	action	pinDigest	-> fc07903
actions/checkout	action	pinDigest	-> f43a0e5
actions/setup-node	action	pinDigest	-> 1a4442c
actions/upload-artifact	action	pinDigest	-> a8a3f3a

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