Replace explicit codecov token with tokenless-OIDC authentication (#773)

See hazelcast/hazelcast-csharp-client#1031

Author: JackPGreen

.github/workflows/coverage_runner.yml

@@ -160,7 +160,7 @@ jobs:
         if: ${{ matrix.python-version == needs.python-versions.outputs.latest-python-version && matrix.os == 'ubuntu-latest' &&  github.event_name == 'pull_request_target' }}
         uses: codecov/codecov-action@v5
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
+          use_oidc: true
           files: ./coverage.xml
           override_pr: ${{ github.event.pull_request.number }}
           fail_ci_if_error: true
@@ -169,15 +169,15 @@ jobs:
         if: ${{ matrix.python-version == needs.python-versions.outputs.latest-python-version && matrix.os == 'ubuntu-latest' &&  github.event_name == 'push' }}
         uses: codecov/codecov-action@v5
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
+          use_oidc: true
           files: ./coverage.xml
           fail_ci_if_error: true
 
       - name: Publish result to Codecov for PR coming from community
         if: ${{ matrix.python-version == needs.python-versions.outputs.latest-python-version && matrix.os == 'ubuntu-latest' && github.event_name == 'workflow_dispatch' }}
         uses: codecov/codecov-action@v5
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
+          use_oidc: true
           files: ./coverage.xml
           override_pr: ${{ github.event.inputs.pr_number }}
           fail_ci_if_error: true