Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build-pipeline.yml

@@ -42,7 +42,7 @@ jobs:
         id: artifact-hashes
         run: cd dist && echo "hashes=$(sha256sum * | base64 -w0)" >> "$GITHUB_OUTPUT"
       - name: Upload dist artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: pyhanko-dist
           path: dist/
@@ -69,7 +69,7 @@ jobs:
         env:
           PKCS11_TEST_MODULE: ${{ env.SOFTHSM2_MODULE_PATH }}
       - name: Stash coverage report
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage
           path: "*-coverage.xml"
@@ -109,7 +109,7 @@ jobs:
           LIVE_CERTOMANCER_HOST_URL: http://localhost:9000
           LIVE_CSC_SCAL2_HOST_URL: http://localhost:8999
       - name: Stash coverage report
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage
           path: "*-coverage.xml"

.github/workflows/release.yml

@@ -52,7 +52,7 @@ jobs:
         env:
           VERSION: ${{ steps.getversion.outputs.version }}
       - name: Upload release body
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: release-body
           path: release.md