copverity: use el9 release

Author: andresailer

.github/workflows/coverity.yml

@@ -10,11 +10,11 @@ jobs:
       with:
         run_local_checkout: 'true'
         coverity-container: 'ghcr.io/aidasoft/coverity:latest'
-        coverity-cmake-command: 'cmake -DCMAKE_CXX_STANDARD=17  -DUSE_EXTERNAL_CATCH2=OFF ..'
+        coverity-cmake-command: 'cmake -DCMAKE_CXX_STANDARD=20  -DUSE_EXTERNAL_CATCH2=OFF ..'
         coverity-project: 'AIDASoft%2Fpodio'
         coverity-project-token: ${{ secrets.PODIO_COVERITY_TOKEN }}
         github-pat: ${{ secrets.READ_COVERITY_IMAGE }}
-        release-platform: "LCG_102/x86_64-centos7-gcc11-opt"
+        release-platform: "LCG_108/x86_64-el9-gcc13-opt"
         run: |
           git clone https://github.com/AIDASoft/podio.git
           cd podio