fix!: restore action-selected Git authentication

[sodle-splunk]

Bug Fixes

• Restore asset access-token or username/password authentication when an action selects a different HTTP(S) Git remote.
• Restore noninteractive SSH connections that accept previously unknown host keys when no optional verification feature exists.
• Remove the mandatory ssh_host_key asset field and its fail-closed behavior.

Breaking Changes

• Action-selected Git remotes again receive the asset's configured credentials.
• The ssh_host_key asset field is removed and SSH host-key verification is no longer mandatory.
• Both functional commits use fix!: and a BREAKING CHANGE: trailer so semantic-release selects a major version.

Manual Documentation

• Generated connector documentation was updated to remove the mandatory ssh_host_key field.

Validation

• pre-commit run --all-files --show-diff-on-failure
• Python syntax compilation for git_connector.py and git_consts.py
• Legacy BaseConnector repository: no connector-local unit-test module was added.
• GitHub pre-commit and compile checks passed on the exact PR head.

Follow-up

• PAPP-38472 tracks optional host-key verification at both asset and action levels while preserving existing behavior when neither value is supplied.

Other information

• The skip-integration label intentionally suppresses asset-lab integration and sanity jobs.
• Merge strategy: merge commit only; do not squash.
• Written by Codex.

---

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Thanks for contributing!

[github-actions]

Merging this PR will release 6.0.0 with the following release notes:

6.0.0 (2026-09-22)

⚠ BREAKING CHANGES

• the ssh_host_key asset field is removed and SSH connections no longer require a pinned host key.

Written by Codex.

• action-selected Git remotes again receive the asset's configured credentials.

Written by Codex.

Bug Fixes

• restore asset auth for action remotes (04e69a5)
• restore noninteractive SSH behavior (296bdf9)

Connector release changes

• Restore asset authentication for action-selected Git remotes.
• Restore noninteractive SSH connections without mandatory host-key verification.

[splunk-soar-semantic-release]

🎉 This PR is included in version 6.0.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀