Bump JamesIves/github-pages-deploy-action from 4.6.4 to 4.6.8 (#268)

Author: dependabot[bot]

.github/workflows/build_and_deploy.yaml

@@ -29,7 +29,7 @@ jobs:
 
             # see https://github.com/JamesIves/github-pages-deploy-action
             - name: Deploy 🚀
-              uses: JamesIves/github-pages-deploy-action@v4.6.4
+              uses: JamesIves/github-pages-deploy-action@v4.6.8
               with:
                   folder: build