build(deps): bump github.com/sourcegraph/go-diff from 0.8.0 to 0.9.0 in the gomod group

[dependabot]

Bumps the gomod group with 1 update: github.com/sourcegraph/go-diff.

Updates github.com/sourcegraph/go-diff from 0.8.0 to 0.9.0

Release notes

Sourced from github.com/sourcegraph/go-diff's releases.

v0.9.0

What's Changed

• Fix panic on short "diff --git" args by @​samarth70 in sourcegraph/go-diff#90
• Reverse the extended headers in ReverseFileDiff by @​youdie006 in sourcegraph/go-diff#92
• Add SCIP code intelligence upload workflow by @​eseliger in sourcegraph/go-diff#89
• Expose sentinel error for reversing Git copies by @​keegancsmith in sourcegraph/go-diff#93
• Reverse diff --git path arguments by @​keegancsmith in sourcegraph/go-diff#94
• test/reverse: cover Git-derived reversal semantics by @​keegancsmith in sourcegraph/go-diff#95
• Centralize Git extended-header parsing by @​keegancsmith in sourcegraph/go-diff#96

New Contributors

• @​samarth70 made their first contribution in sourcegraph/go-diff#90
• @​youdie006 made their first contribution in sourcegraph/go-diff#92

Full Changelog: sourcegraph/go-diff@v0.8.0...v0.9.0

Commits

• cf64c62 refactor/diff: centralize Git extended-header structure (#96)
• ae9e610 test/reverse: pin reversal semantics to Git patches (#95)
• 688abd0 fix/reverse: align Git headers with reverse direction (#94)
• 3aa67b9 fix/reverse: make unsupported copies detectable (#93)
• 5b49902 Add SCIP code intelligence upload workflow (#89)
• f8dfc9c fix/reverse: reverse Git extended headers consistently (#92)
• c69bfd5 Fix panic on short "diff --git" args (#90)
• See full diff in compare view

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[github-actions]

Codeowners approval required for this PR:

• @BakerNet or @zbedforrest

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 8021f9a and 0496b90.

⛔ Files ignored due to path filters (1)

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• go.mod

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📝 Walkthrough

Walkthrough

The pull request updates the direct github.com/sourcegraph/go-diff dependency in go.mod from v0.8.0 to v0.9.0. No exported or public declarations change.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to 0496b

No concrete merge-blocking risk is established for this dependency-only update.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description clearly explains the dependency update from v0.8.0 to v0.9.0 and summarizes the upstream fixes and changes.
Title check	✅ Passed	The title clearly identifies the dependency update and the versions changed. It accurately describes the main pull request change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

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