chore(deps): update codecov/codecov-action action to v6

Author: renovate[bot]

.github/workflows/build-and-test.yml

@@ -41,7 +41,7 @@ jobs:
       timeout-minutes: 10
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       if: always()
       with:
         files: '**/TestResults/**/coverage.cobertura.xml'

.github/workflows/publish-nuget.yml

@@ -59,7 +59,7 @@ jobs:
       timeout-minutes: 10
 
     - name: Upload coverage to CodeCov
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       if: always()
       with:
         files: '**/TestResults/**/coverage.cobertura.xml'