Update metadata.yaml for next release (#388)

Signed-off-by: Andrea Mazzotti <[email protected]>
Co-authored-by: Andrea Mazzotti <[email protected]>

Author: github-actions[bot]

metadata.yaml

@@ -39,3 +39,6 @@ releaseSeries:
   - major: 0
     minor: 13
     contract: v1beta2
+  - major: 0
+    minor: 14
+    contract: v1beta2