Ci: Reverts coverity to run on main (#1315)

Fixes: 0840b86

Author: soopel

.github/workflows/coverity.yml

@@ -27,7 +27,7 @@ jobs:
 
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with:
-          ref: maint-25.02
+          ref: main
 
 
     - name: 'Install dependencies'