chore(deps): bump the workflows group with 2 updates

Bumps the workflows group with 2 updates: [actions/upload-artifact](https://github.com/actions/upload-artifact) and [actions/cache](https://github.com/actions/cache).


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

Updates `actions/cache` from 4 to 5
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: workflows
- dependency-name: actions/cache
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: workflows
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/generate-pgo.yaml

@@ -50,7 +50,7 @@ jobs:
           files: "${PGO_FILE}"
           message: "build: update PGO profile :robot:"
       - run: git push origin $GITHUB_REF
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: "pgo"
           path: "${{ env.PGO_FILE }}"

.github/workflows/perf-regression.yaml

@@ -19,7 +19,7 @@ jobs:
       - run: ./bin/nuclei.test -test.run - -test.bench=. -test.benchmem ./cmd/nuclei/ | tee $BENCH_OUT
         env:
           DISABLE_STDOUT: "1"
-      - uses: actions/cache/restore@v4
+      - uses: actions/cache/restore@v5
         with:
           path: ./cache
           key: ${{ runner.os }}-benchmark
@@ -33,7 +33,7 @@ jobs:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           comment-on-alert: true
           summary-always: true
-      - uses: actions/cache/save@v4
+      - uses: actions/cache/save@v5
         if: github.event_name == 'push'
         with:
           path: ./cache