Updated the workflow file so that it can deploy snapshot on our priva…

[vibhutikumar07]

Describe your changes

Fix snapshot deployment authorization for private repository

Problem

After making the repository private, the snapshot deployment workflow was failing with 403 Forbidden errors when attempting to publish to GitHub Packages:

Root Cause

The workflow was using a custom token (secrets.GIT_TOKEN) instead of the auto-generated GITHUB_TOKEN
Missing explicit permissions required for private repository access
contents: read permission was insufficient for git push operations

Changes

Build job: Added contents: read permission for private repo checkout
Update-version job: Upgraded from contents: read to contents: write (required for git push)
Deploy step: Replaced secrets.GIT_TOKEN with secrets.GITHUB_TOKEN for proper authorization

Benefits

✅ Uses GitHub's auto-generated token (more secure, auto-expires after workflow completion)
✅ Follows principle of least privilege with explicit permission scoping
✅ Resolves authentication issues with private repository and GitHub Packages
✅ No manual token management or rotation required

Testing

Workflow successfully deploys SNAPSHOT versions to GitHub Packages
Version increment and commit push operations work correctly

Any documentation

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist before requesting a review

• I follow Java Development Guidelines for SAP
• I have tested the functionality on my cloud environment.
• I have provided sufficient automated/ unit tests for the code.
• I have increased or maintained the test coverage.
• I have ran integration tests on my cloud environment.
• I have validated blackduck portal for any vulnerability after my commit.

Upload Screenshots/lists of the scenarios tested

• I have Uploaded Screenshots or added lists of the scenarios tested in description