Bump dev.cel:cel from 0.9.1 to 0.9.1-proto3 (#305)

Bumps [dev.cel:cel](https://github.com/google/cel-java) from 0.9.1 to
0.9.1-proto3.
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Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Steve Ayers <[email protected]>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 assertj = "3.27.3"
 buf = "1.54.0"
-cel = "0.9.1"
+cel = "0.9.1-proto3"
 error-prone = "2.38.0"
 junit = "5.13.1"
 maven-publish = "0.32.0"