chore: update requirements.txt to address dependabot security alerts (#1829) (#1848)

* chore: update dependencies in requirements.txt to address dependabot security alerts * update dependencies within gcp/templates --------- Source-Link: googleapis/synthtool@af76aa5 Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-java:latest@sha256:46d2d262cd285c638656c8bde468011b723dc0c7ffd6a5ecc2650fe639c82e8f Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com> Co-authored-by: Anthonios Partheniou <partheniou@google.com>

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: sha256:31c8276a1bfb43766597d32645721c029cb94571f1b8d996cb2c290744fe52f9
-# created: 2023-06-27T18:51:58.922150125Z
+ digest: sha256:46d2d262cd285c638656c8bde468011b723dc0c7ffd6a5ecc2650fe639c82e8f
+# created: 2023-07-24T14:21:17.707234503Z