ci(deps): bump actions/upload-artifact from 5 to 6 (#32)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -114,7 +114,7 @@ jobs:
         continue-on-error: true
 
     - name: Upload security reports
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       if: always()
       with:
         name: security-reports

.github/workflows/release.yml

@@ -54,7 +54,7 @@ jobs:
       run: twine check dist/*
 
     - name: Upload build artifacts
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: dist
         path: dist/

.github/workflows/security.yml

@@ -68,7 +68,7 @@ jobs:
         pip-audit
 
     - name: Upload vulnerability reports
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       if: always()
       with:
         name: vulnerability-reports
@@ -119,7 +119,7 @@ jobs:
         semgrep --config=p/python --config=p/security-audit --config=p/secrets git_safe/
 
     - name: Upload crypto analysis reports
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       if: always()
       with:
         name: crypto-analysis-reports