feat: update GitHub Actions workflow to use Ubuntu 24.04 for Linux jobs

Author: glebournault

.github/workflows/dotnet.yml

@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         platform:
-          - { name: Linux, os: ubuntu-22.04 }
+          - { name: Linux, os: ubuntu-24.04 }
           - { name: Windows, os: windows-2022 }
           - { name: macOS, os: macos-15 }
         dotnet:
@@ -86,7 +86,7 @@ jobs:
             cat coverage-badge.md >> README.md
 
   publish_badge:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     needs: build
     steps:
       - name: Checkout gh-pages