fix: Simplify cooldown settings in dependabot.yml

Removed specific cooldown days for different semver types.

Author: lirantal

template/.github/dependabot.yml

@@ -10,9 +10,6 @@ updates:
     open-pull-requests-limit: 10
     cooldown:
       default-days: 7
-      semver-major-days: 7
-      semver-minor-days: 7
-      semver-patch-days: 7
     # Use the 'dependencies' default label and add
     # the 'automerge' one for automerge github action support
     labels: