chore(owlbot-nodejs): install 3.13.5 Python

* chore: install higher version of Python

* chore: update to python 3.15

* update lagging dependency

* fix vulnerability

* change the version

Source-Link: googleapis/synthtool@ca4c7ce
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:6062c519ce78ee08490e7ac7330eca80f00f139ef1a241c5c2b306550b60c728

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,4 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:c7e4968cfc97a204a4b2381f3ecb55cabc40c4cccf88b1ef8bef0d976be87fee
+  digest: sha256:6062c519ce78ee08490e7ac7330eca80f00f139ef1a241c5c2b306550b60c728
+# created: 2025-06-26T22:34:58.583582089Z

release-please-config.json

@@ -312,6 +312,7 @@
     "src/apis/datamigration": {},
     "src/apis/appengine": {},
     "src/apis/dlp": {},
-    "src/apis/apigateway": {}
+    "src/apis/apigateway": {},
+    "src/apis/saasservicemgmt": {}
   }
 }