chore: bump urllib3 from 1.26.16 to 1.26.17 in /synthtool/gcp/templates/java_library/.kokoro (#1875)

chore: bump urllib3 in /synthtool/gcp/templates/java_library/.kokoro

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.16 to 1.26.17.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.16...1.26.17)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Source-Link: googleapis/synthtool@dbb940f
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:6e2fc7eba84c3100cde964ebcfd0e553d4664ec4a74989c978a143812785ff23

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-java:latest
-  digest: sha256:32851debfefed2b66038e0141f1b5c2103bb59ba80b7475adbc10ef7abab3de7
-# created: 2023-06-22T15:06:52.039318836Z
+  digest: sha256:6e2fc7eba84c3100cde964ebcfd0e553d4664ec4a74989c978a143812785ff23
+# created: 2023-10-03T23:18:35.620358763Z