Bump org.projectnessie.cel:cel-bom from 0.5.1 to 0.5.3

Bumps [org.projectnessie.cel:cel-bom](https://github.com/projectnessie/cel-java) from 0.5.1 to 0.5.3.
- [Release notes](https://github.com/projectnessie/cel-java/releases)
- [Commits](projectnessie/cel-java@v0.5.1...v0.5.3)

---
updated-dependencies:
- dependency-name: org.projectnessie.cel:cel-bom
  dependency-version: 0.5.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 assertj = "3.27.3"
 buf = "1.53.0"
-cel = "0.5.1"
+cel = "0.5.3"
 error-prone = "2.38.0"
 junit = "5.12.2"
 maven-publish = "0.31.0"