ci: switch to trusted publishing (#320)

Author: ap--

.github/workflows/release.yml

@@ -11,6 +11,9 @@ env:
 jobs:
   release:
     runs-on: ubuntu-latest
+    environment: pypi
+    permissions:
+      id-token: write
     steps:
     - name: Check out the repository
       uses: actions/checkout@v4
@@ -35,7 +38,5 @@ jobs:
       if: github.event_name == 'release'
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
-        user: __token__
-        password: ${{ secrets.UPATH_GIT_REPO }}
         verbose: true
         skip_existing: true