CI: increase timeout, see #9470

Especially OpenBSD with Coverage is rather slow.

Author: ThomasWaldmann

.github/workflows/ci.yml

@@ -379,7 +379,7 @@ jobs:
       id-token: write
       attestations: write
     runs-on: ubuntu-24.04
-    timeout-minutes: 90
+    timeout-minutes: 180
     needs: [lint]
     continue-on-error: true