Release workflow opens PR with changes

[Srihari1192]

Issue link

closes #117

What changes have been made

• Added the workflow step in release process to create a pull request with changes of updating go dependencies
• Included pull request creation changes from Release workflow opens PR with changes codeflare-sdk#313
• added pull request branch deletion step

Verification steps

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[Srihari1192]

Tested this changes for the steps Pull request creation and deletion here by manually approving PR as in fork
openshift-ci bot not available https://github.com/Srihari1192/instascale/actions/runs/5939307730/job/16105442608

[sutaakar]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: anishasthana

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