## Description
> This PR adds support for OpenSSH private keys in the SSHUtils. Earlier
we only supported RSA, DSA, EC key formats.
Fixes#39015
## Automation
/ok-to-test tags="@tag.Datasource"
### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results -->
> [!TIP]
> 🟢🟢🟢 All cypress tests have passed! 🎉🎉🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/13160498931>
> Commit: 0c06208089c6e3498f5fca0b7ee861b7797e5cef
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=13160498931&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.Datasource`
> Spec:
> <hr>Wed, 05 Feb 2025 15:56:40 UTC
<!-- end of auto-generated comment: Cypress test results -->
## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Enhanced secure connection setup by automatically detecting and
supporting multiple SSH key formats, ensuring more reliable
authentication during tunnel creation.
- Improved error messaging for invalid SSH key formats and parsing
issues.
- **Tests**
- Added new tests to validate the parsing of OpenSSH, PKCS#8 PEM, and
RSA PEM key formats, improving test coverage for SSH key handling
functionality.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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