Update MINA SSHD version

[aquinney0]

Move the MINA SSHD library dependency to 2.12.0 from 2.10.0.

The 8.7.0 update to JGit and the underlying SSH implementation is not compatible with 2.10.0 of MINA SSHD, causing all SSH Git dependencies to result in build failures.

Fixes #28823

#28823

Context

Some background is in the linked issue. Previous versions of Gradle did not work with modern SSH protocols, which made it unable to use services like github.com for source dependencies. These shortcomings were addressed with plugins designed to specifically address this issue, but the release of 8.7.0 broke the entire JGit SSH subsystem, once again making SSH source dependencies unusable.

Contributor Checklist

• Review Contribution Guidelines.
• Make sure that all commits are signed off to indicate that you agree to the terms of Developer Certificate of Origin.
• Make sure all contributed code can be distributed under the terms of the Apache License 2.0, e.g. the code was written by yourself or the original code is licensed under a license compatible to Apache License 2.0.
• Check "Allow edit from maintainers" option in pull request so that additional changes can be pushed by Gradle team.
• Provide integration tests (under <subproject>/src/integTest) to verify changes from a user perspective.
• Provide unit tests (under <subproject>/src/test) to verify logic.
• Update User Guide, DSL Reference, and Javadoc for public-facing changes.
• Ensure that tests pass sanity check: ./gradlew sanityCheck.
• Ensure that tests pass locally: ./gradlew <changed-subproject>:quickTest.

Reviewing cheatsheet

Before merging the PR, comments starting with

• ❌ ❓must be fixed
• 🤔 💅 should be fixed
• 💭 may be fixed
• 🎉 celebrate happy things

[gitstream-cm]

📊 Changes by Platform: this PR is 95% new code

2 platforms were affected

See details

Platform	Added Lines	% of Total Line Changes	Deleted Lines	% of Total Line Changes	Files Changed	% of Total Files Changed
null	1	5%	1	5%	1	50%
software	19	90%	0	0%	1	50%

[ljacomet]

Thank you for your contribution!

This PR is complete and simple enough, it will be merged immediately.

[ljacomet]

@bot-gradle merge