ci: Change Java distribution adopt->temurin

[barbeau]

Summary:

https://github.com/actions/setup-java#supported-distributions says:

NOTE: Adopt OpenJDK got moved to Eclipse Temurin and won't be updated anymore. It is highly recommended to migrate workflows from adopt to temurin to keep receiving software and security updates. See more details in the Good-bye AdoptOpenJDK post.)

This PR changes GitHub Actions to use temurin instead of adopt as highly recommended above.

It also updates acceptance_test to use actions/setup-java@v2 instead of actions/setup-java@v1 to be consistent with the other GitHub Actions.

Expected behavior:

Use temurin Java distribution on CI instead of adopt, use actions/setup-java@v2 consistently.

Please make sure these boxes are checked before submitting your pull request - thanks!

• Run the unit tests with gradle test to make sure you didn't break anything
• Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues
• Include screenshot(s) showing how this pull request works and fixes the issue(s)

[github-actions]

Thank you for this contribution! 🍰✨🦄

Information about source corruption

0 out of 1248 sources are corrupted.

Acceptance test details

The changes in this pull request did not trigger any new errors on known GTFS datasets from the MobilityDatabase.
Download the full acceptance test report for commit 269cfc3 here (report will disappear after 90 days).

[isabelle-dr]

Thank you Sean!