publish.yml: use trusted publishing instead of API token

.github/workflows/publish.yml

@@ -1,4 +1,4 @@
-name: Publish distributions to PyPI
+name: Package build
 
 on:
   pull_request:
@@ -9,8 +9,8 @@ on:
     - "v*"
 
 jobs:
-  build-n-publish:
-    name: Build and publish distributions to PyPI
+  build:
+    name: Build wheel and sdist
     if: github.repository == 'pvlib/pvlib-python'
     runs-on: ubuntu-latest
     steps:
@@ -49,10 +49,28 @@ jobs:
       run: du -h pvlib
       working-directory: ./tmp
 
+    - name: Store the distribution packages
+      uses: actions/upload-artifact@v4
+      with:
+        name: python-package-distributions
+        path: dist/
+
+  publish:
+    name: Release dist files to PyPI
     # only publish distribution to PyPI for tagged commits
+    if: startsWith(github.ref, 'refs/tags/v')
+    needs:
+    - build
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write  # for PyPI trusted publishing
+
+    steps:
+    - name: Download all dist files
+      uses: actions/download-artifact@v4
+      with:
+        name: python-package-distributions
+        path: dist/
+
     - name: Publish distribution to PyPI
-      if: startsWith(github.ref, 'refs/tags/v')
       uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        user: __token__
-        password: ${{ secrets.pypi_password }}