chore(deps): update dependency berp to v1.5.0

- Reinstates `ubuntu-latest` for codegen workflow
  - Contributes to resolving cucumber#349
- Bump .NET to 8.x in codegen workflow

.github/workflows/test-codegen.yml

@@ -12,19 +12,18 @@ on:
 
 jobs:
   test-codegen:
-    # Failing on `ubuntu-24.04` (https://github.com/cucumber/gherkin/issues/349)
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
 
       - uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: '5.0.x'
+          dotnet-version: '8.x'
 
       - name: install berp
         run: |
-          dotnet tool update Berp --version 1.3.0 --tool-path ~/bin
+          dotnet tool update Berp --version 1.5.0 --tool-path ~/bin
           echo "~/bin" >> $GITHUB_PATH
 
       - name: generate code for all languages