fix(bitbucketdatacenter): ignore branch deletion events in ParsePayload

[infernus01]

Changes

When a branch is deleted in Bitbucket Data Center, the repo:refs_changed webhook event contains a toHash with a zero SHA (0000000000000000000000000000000000000000). Previously, Pipelines as Code would attempt to process this event as a push, resulting in commit validation failures and noisy logs.
This patch updates the ParsePayload function to detect and ignore such events early, returning (nil, nil) when a branch deletion is detected. This ensures branch deletions are not processed like standard push events.
Fixes #2035
/kind bug

Submitter Checklist

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• ♽ Run make test lint before submitting a PR to avoid unnecessary CI processing. Consider installing pre-commit and running pre-commit install in the repository root for an efficient workflow.

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• 📖 Document any user-facing features or changes in behavior.

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• 🎁 If feasible, add an end-to-end test. See README for details.

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• If adding a provider feature, fill in the following details:

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[infernus01]

/cc @zakisk @chmouel

[chmouel]

/ok-to-test

[chmouel]

this will fail because your commit message is not gitlint compatible

Gitlint..................................................................Failed
- hook id: gitlint
- exit code: 2

3: B6 Body message is missing
make: *** [Makefile:119: gitlint] Error 1
3: B6 Body message is missing
make: *** [Makefile:119: gitlint] Error 1

please consider installing pre-commit job

[zakisk]

/ok-to-test

[chmouel]

/ok-to-test

[chmouel]

A mirrored PR has been created for E2E testing: #2130

[zakisk]

@chmouel E2E tests are running here?

[infernus01]

One of the e2e tests (TestGiteaACLCommentsAllowing/Retest) failed, but from reviewing the logs, it looks unrelated to this patch.
All other checks including pre-commit, unit tests and gitlint have passed.

[chmouel]

@zakisk ah that's actually a nice github behaviour side effect, because we have the same SHA from the mirrored PR, github automatically sees it on this PR as well

[zakisk]

so check-runs are posted in both PRs? that's nice though

[chmouel]

/ok-to-test

[chmouel]

/ok-to-test

[chmouel]

you had a fumpt error which i have pushed to your branch to fix

[infernus01]

Oh I see, but the failing of test persists, with the error:
The Service "gitea" is invalid: spec.ports[0].nodePort: Invalid value: 32567: provided port is already allocated

[zakisk]

/ok-to-test

[chmouel]

💫 Jira ticket created: TP-15862

[infernus01]

Can we now run e2e tests?

[zakisk]

/ok-to-test

[zakisk]

/lgtm

[pipelines-as-code]

Congrats @infernus01 your PR Has been approved 🎉

✅ Pull Request Approved

Approval Status:

• Required Approvals: 1
• Current Approvals: 1

👥 Reviewers Who Approved:

Reviewer	Permission Level	Approval Status
@zakisk	admin	✅

📝 Next Steps

• Ensure all required checks pass
• Comply with branch protection rules
• Request a maintainer to merge using the /merge command (or merge it
  directly if you have repository permission).

Automated by the PAC Boussole 🧭

[zakisk]

/merge

[pipelines-as-code]

✅ PR Successfully Merged

• Merge method: rebase
• Merged by: @zakisk
• Total approvals: 1/1

Approvals Summary:

Reviewer	Permission	Status
@zakisk	admin	✅

Thank you @infernus01 for your valuable contribution! 🎉

Automated by the PAC Boussole 🧭