Move Java/solution_1 to adoptopenjdk/openjdk base image

[rbergen]

Description

This makes Java/solution_1 use an AdoptOpenJDK-provided, Alpine-based, OpenJDK image as the its base image, because the currently used "official" OpenJDK image has been deprecated since July 2022.

Contributing requirements

• [x] I read the contribution guidelines in CONTRIBUTING.md.
• [x] I placed my solution in the correct solution folder.
• [x] I added a README.md with the right badge(s).
• [x] I added a Dockerfile that builds and runs my solution.
• [x] I selected drag-race as the target branch.
• [x] All code herein is licensed compatible with BSD-3.

[rbergen]

Merging based on lack of reviewer feedback.