chore(deps): update korthout/backport-action action to v4.5

Author: renovate[bot]

.github/workflows/backport.yaml

@@ -45,7 +45,7 @@ jobs:
 
       # Backport action that creates the PR with given settings
       - name: Create backport PR
-        uses: korthout/backport-action@ad30f01dbe543be4a24431001c38f3617af8c745 # v4.4.0
+        uses: korthout/backport-action@7c3f6cd5843cac11bc59a04a1b7699af93261670 # v4.5
         with:
           github_token: ${{ steps.app-token.outputs.token }}
           pull_description: 'Backport for #${pull_number}.'