Update actions/cache action to v5

Author: renovate[bot]

.github/actions/build-and-test/action.yml

@@ -46,7 +46,7 @@ runs:
         dotnet-version: 8.0.x
 
     - name: NuGet Cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ${{ env.NUGET_PACKAGES }}
         key: ${{ runner.os }}.nuget.${{ hashFiles('**/*.csproj') }}