Add Modrinth env defaults to Gitea build

.gitea/workflows/build.yml

@@ -10,6 +10,14 @@ on:
 jobs:
   verify:
     runs-on: ubuntu-latest
+    env:
+      MODRINTH_URL: https://modrinth.com/
+      MODRINTH_API_BASE_URL: https://api.modrinth.com/
+      MODRINTH_ARCHON_BASE_URL: https://archon.modrinth.com/
+      MODRINTH_API_URL: https://api.modrinth.com/v2/
+      MODRINTH_API_URL_V3: https://api.modrinth.com/v3/
+      MODRINTH_SOCKET_URL: wss://api.modrinth.com/
+      MODRINTH_LAUNCHER_META_URL: https://launcher-meta.modrinth.com/
     steps:
       - name: Checkout
         uses: actions/checkout@v4