fix: Set the ubuntu runner to 22.04 to keep the same compiler version

Probably should setup the job to setup the gcc version instead but for now this works.

.github/workflows/pipeline.yml

@@ -9,7 +9,7 @@ env:
 jobs:
   linux-builds:
     name: linux ${{matrix.cxx}}, C++${{matrix.std}}, ${{matrix.build_type}}
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix: