chore: separte workflow into build and publish steps

Author: abelaba

.github/workflows/publish-to-pypi.yml

@@ -1,15 +1,12 @@
 ---
-permissions:
-  contents: read
 name: PyPI
 on: push
 jobs:
-  build-n-publish:
-    name: Build and publish optimagic Python 🐍 distributions 📦 to PyPI
+  build:
+    name: Build distribution
     runs-on: ubuntu-latest
     permissions:
       contents: read
-      id-token: write
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1
         with:
@@ -31,6 +28,23 @@ jobs:
           --sdist
           --wheel
           --outdir dist/
-      - name: Publish distribution 📦 to PyPI
-        if: startsWith(github.ref, 'refs/tags')
+      - name: Upload distribution artifacts
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
+        with:
+          name: dist
+          path: dist
+  publish:
+    name: Publish to PyPI
+    if: startsWith(github.ref, 'refs/tags')
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+    steps:
+      - name: Download distribution artifacts
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131
+        with:
+          name: dist
+          path: dist
+      - name: Publish distribution to PyPI
         uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e