gh deploy pages action version bump

Author: fxjung

.github/workflows/deploy-doc.yml

@@ -29,4 +29,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@v4

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "ridepy"
-version = "2.1.post4"
+version = "2.1.post5"
 authors = [
     { name = "Felix Jung", email = "felix.jung@tu-dresden.de" },
     { name = "Debsankha Manik", email = "dmanik@debsankha.net" },