Stop grouping libcnb Dependabot PRs separately #955

Job	Run time
Rust Code Linting	20s
Integration Tests (buildpacks/gradle, builder:24, amd64)	4m 1s
Unit Tests	25s
Integration Tests (buildpacks/jvm, builder:24, amd64)	2m 30s
Integration Tests (buildpacks/maven, builder:24, amd64)	4m 20s
Integration Tests (buildpacks/sbt, builder:24, amd64)	5m 28s
Integration Tests (buildpacks/gradle, builder:24, arm64)	6m 11s
Integration Tests (buildpacks/jvm, builder:24, arm64)	3m 58s
Integration Tests (buildpacks/maven, builder:24, arm64)	6m 2s
Integration Tests (buildpacks/sbt, builder:24, arm64)	5m 19s
Integration Tests (buildpacks/gradle, builder:22, amd64)	3m 26s
Integration Tests (buildpacks/jvm, builder:22, amd64)	2m 37s
Integration Tests (buildpacks/jvm-function-invoker, builder:22, amd64)	2m 50s
Integration Tests (buildpacks/maven, builder:22, amd64)	4m 17s
Integration Tests (buildpacks/sbt, builder:22, amd64)	5m 56s
Integration Tests (buildpacks/gradle, builder:20, amd64)	3m 44s
Integration Tests (buildpacks/jvm, builder:20, amd64)	2m 15s
Integration Tests (buildpacks/maven, builder:20, amd64)	4m 8s
Integration Tests (buildpacks/sbt, builder:20, amd64)	5m 56s
	1h 13m 43s

Provide feedback