Bump org.apache.tomcat:tomcat-jdbc in /modules/jdbc-test

Bumps org.apache.tomcat:tomcat-jdbc from 11.0.14 to 11.0.21.

---
updated-dependencies:
- dependency-name: org.apache.tomcat:tomcat-jdbc
  dependency-version: 11.0.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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