chore(deps): update dependency matplotlib to v3.7.1 (GoogleCloudPlatform#10301)

* chore(deps): update dependency matplotlib to v3.7.1

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* Update requirements.txt

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Eric Dong <[email protected]>
Co-authored-by: Karl Weinmeister <[email protected]>

Author: 4 people

cloud-sql/postgres/pgvector/notebooks/pgvector_gen_ai_demo.ipynb

@@ -1,5 +1,3 @@
 google-cloud-storage==2.9.0
 google-cloud-bigquery[pandas,pyarrow]==3.11.0
-matplotlib==3.7.1; python_version > '3.6'
-matplotlib==3.3.4; python_version == '3.6'
-matplotlib==2.2.5; python_version < '3.0'
+matplotlib==3.7.1