Update remote repository URL in mirror workflow

.github/workflows/mirror.yml

@@ -0,0 +1,13 @@
+on: [push]
+jobs:
+  mirror:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: yesolutions/mirror-action@master
+        with:
+          REMOTE: 'https://codeberg.org/mdcms/mdcms.git'
+          GIT_USERNAME: kbenestad
+          GIT_PASSWORD: ${{ secrets.GIT_PASSWORD_CODEBERG }}