auto-update: use a branch prefix rather than suffix (#12097)

This is more in-line with dependabot and similar auto-updaters.

Reduce ci coverage on github action updating (it does not change
kubespray code, no need for testing).

.github/dependabot.yml

@@ -16,5 +16,6 @@ updates:
     directory: "/"
     labels:
       - release-note-none
+      - ci-short
     schedule:
       interval: "weekly"

.github/workflows/upgrade-patch-versions.yml

@@ -34,7 +34,7 @@ jobs:
         commit-message: Patch versions updates
         title: Patch versions updates - ${{ inputs.branch }}
         labels: bot
-        branch: ${{ inputs.branch }}-patch-updates
+        branch: component_hash_update/${{ inputs.branch }}
         sign-commits: true
         body: |
           /kind feature