Push Docker images to ECR Public

[eagletmt]

This PR also includes Java/Ruby upgrades to build successfully.

cc @cookpad/infra @shimpeko

[Copilot]

Pull request overview

This PR updates CI/CD to build and push Prism Docker images to ECR Public, while also upgrading the Java and Ruby toolchains/dependencies so builds can succeed with the new pipelines.

Changes:

• Upgrade Java build/tooling to Java 17 (including base images and Gradle configuration).
• Upgrade Ruby GC app to Ruby 4.0 and refresh Gem dependencies/lockfile.
• Replace the prior CI workflow with new GitHub Actions workflows that run tests and (on master pushes) build & push images to ECR Public.

Reviewed changes

Copilot reviewed 10 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
shared/build.gradle	Bumps Hadoop/Parquet dependencies for the shared base layer.
shared/Dockerfile	Updates shared base image to Corretto 17 (AL2023) and refreshes Hadoop download/verification steps.
gc/Gemfile	Updates bricolage version for the GC app.
gc/Gemfile.lock	Refreshes locked Ruby dependencies and Bundler version.
gc/Dockerfile	Moves GC app container build/runtime to Ruby 4.0 images and streamlines Gemfile copy.
gc/.ruby-version	Sets local Ruby version to 4.0.
build.gradle	Switches Gradle subprojects to Java 17 and updates Lombok.
README.md	Updates prerequisite JDK version to 17.
.github/workflows/pull-request.yml	Adds PR workflow to run tests via the composite action.
.github/workflows/master.yml	Adds master workflow to run tests then build/push Java and Ruby images to ECR Public.
.github/workflows/ci.yml	Removes the previous combined CI workflow.
.github/actions/test/action.yml	Adds a composite action to standardize Java setup + Gradle test execution.

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[Copilot]

curl is being given a quoted URL containing {,.sha512,.asc}. Shell brace expansion does not occur inside quotes, so this will fetch a literal URL and likely fail to download the .sha512/.asc files, breaking the subsequent sha512sum -c/gpg --verify steps. Remove the quotes (or download each file explicitly) so the three artifacts are actually downloaded.

Suggested change

	RUN curl -sSfLO "https://dlcdn.apache.org/hadoop/common/hadoop-${HADOOP_VERSION}/hadoop-${HADOOP_VERSION}.tar.gz{,.sha512,.asc}"
	RUN curl -sSfLO https://dlcdn.apache.org/hadoop/common/hadoop-${HADOOP_VERSION}/hadoop-${HADOOP_VERSION}.tar.gz{,.sha512,.asc}

[eagletmt]

{,.sha512,.asc} is expanded by curl