Bump io.quarkus:quarkus-bom from 3.6.6 to 3.21.2

Bumps [io.quarkus:quarkus-bom](https://github.com/quarkusio/quarkus) from 3.6.6 to 3.21.2.
- [Release notes](https://github.com/quarkusio/quarkus/releases)
- [Commits](quarkusio/quarkus@3.6.6...3.21.2)

---
updated-dependencies:
- dependency-name: io.quarkus:quarkus-bom
  dependency-version: 3.21.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

trellis-parent/pom.xml

@@ -47,7 +47,7 @@
     <postgres.version>42.7.2</postgres.version>
     <snakeyaml.version>2.2</snakeyaml.version>
     <jaxb.version>4.0.5</jaxb.version>
-    <quarkus.version>3.6.6</quarkus.version>
+    <quarkus.version>3.21.2</quarkus.version>
     <glassfish.json.version>2.0.1</glassfish.json.version>
     <parsson.version>1.1.5</parsson.version>