ci: build both release and debug for PRs

[plexoos]

No description provided.

[Copilot]

Pull Request Overview

This PR modifies the GitHub Actions workflow to build both release and debug variants of Docker images for pull requests, rather than only building the develop target. The change introduces a matrix strategy to build multiple targets in parallel and updates the tagging scheme to differentiate between build types.

• Introduces matrix strategy to build both "release" and "develop" targets
• Updates image tagging to include the target type in the tag name
• Conditionally runs tests only for non-release builds

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