Update all the CI actions (#3323)

Also adds a job for the scheduled CI run to only run if there has been a
commit in the last 24h
([StackOverflow](https://stackoverflow.com/questions/63014786/how-to-schedule-a-github-actions-nightly-build-but-run-it-only-when-there-where))

[skip ci]

.github/workflows/helm.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0