GH-535: [Dev] Use compose.yaml not docker-compose.yml (#536)

Fixes GH-535.

Because Docker Compose recommends `compose.yaml`:


https://docs.docker.com/compose/intro/compose-application-model/#the-compose-file

> The default path for a Compose file is compose.yaml (preferred) or
> compose.yml that is placed in the working directory. Compose also
> supports docker-compose.yaml and docker-compose.yml for backwards
> compatibility of earlier versions. If both files exist, Compose
> prefers the canonical compose.yaml.

.github/workflows/test.yml

@@ -66,7 +66,7 @@ jobs:
         uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a # v4.1.2
         with:
           path: .docker
-          key: maven-${{ matrix.jdk }}-${{ matrix.maven }}-${{ hashFiles('**/docker-compose.yml', '**/pom.xml') }}
+          key: maven-${{ matrix.jdk }}-${{ matrix.maven }}-${{ hashFiles('**/compose.yaml', '**/pom.xml') }}
           restore-keys: maven-${{ matrix.jdk }}-${{ matrix.maven }}-
       - name: Execute Docker Build
         env: