ci: install plain gcc on the OpenBSD jobs

Author: spytheman

.github/workflows/openbsd_ci.yml

@@ -90,7 +90,7 @@ jobs:
           shell: sh
           sync_files: runner-to-vm
           run: |
-            sudo pkg_add git sqlite3 gmake boehm-gc libiconv gcc-11.2.0p15
+            sudo pkg_add git sqlite3 gmake boehm-gc libiconv gcc
             # Mandatory: hostname not set in VM => some tests fail
             sudo hostname -s openbsd-ci
             echo "### OS infos"