testing: WAL for teh DB seems to be working in small scale tests, lets see if it works long term

applications/git/forgejo.nix

@@ -111,6 +111,10 @@ in {
           REPO_INDEXER_ENABLED = true;
         };
 
+        database = {
+          SQLITE_JOURNAL_MODE = "WAL";
+        };
+
         # Allow for signing off merge requests
         #        "repository.signing" = {
         #          SIGNING_KEY = "5B2DED0FE9F8627A";