fix mariadb-connector-c url

Author: methane

.github/workflows/windows.yaml

@@ -22,8 +22,9 @@ jobs:
       - name: Download and Unzip Connector
         if: steps.cache-connector.outputs.cache-hit != 'true'
         shell: bash
+        # zip URL should be updated by hand on each release.
         run: |
-          curl -LO "https://dlm.mariadb.com/4516912/Connectors/c/connector-c-${CONNECTOR_VERSION}/mariadb-connector-c-${CONNECTOR_VERSION}-src.zip"
+          curl -LO "https://dlm.mariadb.com/4751031/Connectors/c/connector-c-3.4.9/mariadb-connector-c-3.4.9-src.zip"
           unzip "mariadb-connector-c-${CONNECTOR_VERSION}-src.zip" -d c:/
           mv "c:/mariadb-connector-c-${CONNECTOR_VERSION}-src" c:/mariadb-connector-src