Build(deps): bump apache-airflow in /tools/cloud-composer-dag-validation

Bumps [apache-airflow](https://github.com/apache/airflow) from 3.2.1rc1 to 3.2.2.
- [Release notes](https://github.com/apache/airflow/releases)
- [Changelog](https://github.com/apache/airflow/blob/main/docker-stack-docs/changelog.rst)
- [Commits](apache/airflow@3.2.1rc1...3.2.2)

---
updated-dependencies:
- dependency-name: apache-airflow
  dependency-version: 3.2.2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

tools/cloud-composer-dag-validation/requirements.txt

@@ -1,4 +1,4 @@
-apache-airflow==3.2.1rc1
+apache-airflow==3.2.2
 apache-airflow-providers-common-sql==1.25.0rc1
 apache-airflow-providers-ftp==3.7.0
 apache-airflow-providers-google==22.0.0