Fix SARIF upload branch ref/sha (#195)

## 🎟️ Tracking

https://bitwarden.atlassian.net/browse/VULN-226

## 📔 Objective

Add correct ref/sha reference for main and PR branches, since
codeql/upload-sarif doesn't handle pull_request_target properly.

## ⏰ Reminders before review

- Contributor guidelines followed
- All formatters and local linters executed and passed
- Written new unit and / or integration tests where applicable
- Protected functional changes with optionality (feature flags)
- Used internationalization (i18n) for all UI strings
- CI builds passed
- Communicated to DevOps any deployment requirements
- Updated any necessary documentation (Confluence, contributing docs) or
informed the documentation
  team

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that's not quite a confirmed
  issue and could potentially benefit from discussion
- 🎨 (`:art:`) for suggestions / improvements
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concerns needing attention
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- ⛏ (`:pick:`) for minor or nitpick changes

Author: mandreko-bitwarden

.github/workflows/lint.yml

@@ -63,6 +63,8 @@ jobs:
         uses: github/codeql-action/upload-sarif@dd746615b3b9d728a6a37ca2045b68ca76d4841a # v3.28.8
         with:
           sarif_file: clippy_result.sarif
+          sha: ${{ contains(github.event_name, 'pull_request') && github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ contains(github.event_name, 'pull_request') && format('refs/pull/{0}/head', github.event.pull_request.number) || github.ref }}
 
       # Run it again but this time without the sarif output so that the
       # status code of the command is caught and reported as failed in GitHub.

.github/workflows/scan.yml

@@ -49,6 +49,8 @@ jobs:
         uses: github/codeql-action/upload-sarif@dd746615b3b9d728a6a37ca2045b68ca76d4841a # v3.28.8
         with:
           sarif_file: cx_result.sarif
+          sha: ${{ contains(github.event_name, 'pull_request') && github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ contains(github.event_name, 'pull_request') && format('refs/pull/{0}/head', github.event.pull_request.number) || github.ref }}
 
   quality:
     name: Quality scan