Fix token and permissions

.github/workflows/add_mod_port.yml

@@ -24,6 +24,12 @@ on:
         description: "CurseForge file ID"
         required: true
 
+permissions:
+  # To push the automated commit.
+  contents: write
+  # To trigger the hugo workflow.
+  actions: write
+
 jobs:
   update-post:
     runs-on: ubuntu-latest
@@ -67,4 +73,6 @@ jobs:
       # For some reason the commit above doesn't automatically trigger the hugo
       # workflow, so we need to explicitly start it here.
       - name: Trigger hugo workflow
+        env:
+          GH_TOKEN: ${{ github.token }}
         run: gh workflow run hugo.yml