build(deps): bump dev.cel:cel from 0.11.1 to 0.12.0

Bumps [dev.cel:cel](https://github.com/google/cel-java) from 0.11.1 to 0.12.0.
- [Release notes](https://github.com/google/cel-java/releases)
- [Commits](google/cel-java@v0.11.1...v0.12.0)

---
updated-dependencies:
- dependency-name: dev.cel:cel
  dependency-version: 0.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -43,7 +43,7 @@ dsp-tck = "1.0.0-RC6"
 dcp-tck = "1.0.0-RC6"
 junit = "6.0.3"
 wiremock = "3.13.2"
-cel = "0.11.1"
+cel = "0.12.0"
 
 [libraries]
 iron-vc = { module = "com.apicatalog:iron-verifiable-credentials", version.ref = "apicatalog" }