ci: update sigstore/gh-action-sigstore-python

Note: v4 will be released soon

Author: KyleKing

.github/workflows/tests.yml

@@ -83,10 +83,8 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: "3.x"
-      - name: Upgrade Pip
-        run: python -m pip install --upgrade pip
-      - name: Install Poetry
-        run: python -m pip install build
+      - name: Install build tooling
+        run: python -m pip install --upgrade pip build
       - name: Build a binary wheel and a source tarball
         run: python3 -m build
       - name: Store the distribution packages
@@ -135,11 +133,12 @@ jobs:
           name: python-package-distributions
           path: dist/
       - name: Sign the dists with Sigstore
-        uses: sigstore/gh-action-sigstore-python@v2.1.1
+        uses: sigstore/gh-action-sigstore-python@v3.0.0
         with:
           inputs: >-
             ./dist/*.tar.gz
             ./dist/*.whl
+          upload-signing-artifacts: 'false'
       - name: Create GitHub Release
         env:
           GITHUB_TOKEN: ${{ github.token }}