build(deps): bump nbconvert from 7.17.0 to 7.17.1 in /synthtool/gcp/templates/python_notebooks_testing_pipeline/.cloud-build

build(deps): bump nbconvert

Bumps [nbconvert](https://github.com/jupyter/nbconvert) from 7.17.0 to 7.17.1.
- [Release notes]
- [Changelog]
- [Commits]

---
updated-dependencies:
- dependency-name: nbconvert
  dependency-version: 7.17.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Mike Eltsufin <meltsufin@google.com>

Source-Link: googleapis/synthtool@33be566
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:8a9cb74f148cabb4157577feda4e4418f5ab1811cdb61e3c0252f150adf72a27

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-nodejs:latest
-  digest: sha256:5ef945dd0b346b78caabeaf973467273a31394c074f5ec3f85cb66769036bab5
-# created: 2026-02-12T15:40:42.386984339Z
+  digest: sha256:8a9cb74f148cabb4157577feda4e4418f5ab1811cdb61e3c0252f150adf72a27
+# created: 2026-05-06T15:16:37.074906127Z