Revert "gh actions: run formatters in parallel"

This reverts commit 07cdd551613643a6f4ecfa6169448625705573c7.
diff --git a/bin/run-formatters.sh b/bin/run-formatters.sh
index 5859931..0f740ee 100755
--- a/bin/run-formatters.sh
+++ b/bin/run-formatters.sh
@@ -13,62 +13,42 @@
   echo "Running in fix mode (formatting will be modified)"
 fi
 
-# Run both formatters in parallel
-echo "Running Go and webui formatters in parallel..."
+# Go formatting with gofumpt
+echo "Checking Go formatting..."
+if [ "$CHECK_MODE" = true ]; then
+  # In check mode, we want to display the files that need formatting and exit with error if any
+  FILES_TO_FORMAT=$(gofumpt -l .)
+  if [ -n "$FILES_TO_FORMAT" ]; then
+    echo "The following Go files need formatting:"
+    echo "$FILES_TO_FORMAT"
+    exit 1
+  else
+    echo "Go formatting check passed"
+  fi
+else
+  # In fix mode, we apply the formatting
+  echo "Fixing Go formatting with gofumpt"
+  gofumpt -w .
+  echo "Go formatting complete"
+fi
 
-# Run Go formatting in background
-(
-  echo "Checking Go formatting..."
+# Webui formatting with Prettier
+echo "Checking webui formatting..."
+if [ -d "./webui" ]; then
+  cd webui
   if [ "$CHECK_MODE" = true ]; then
-    # In check mode, we want to display the files that need formatting and exit with error if any
-    FILES_TO_FORMAT=$(gofumpt -l .)
-    if [ -n "$FILES_TO_FORMAT" ]; then
-      echo "The following Go files need formatting:"
-      echo "$FILES_TO_FORMAT"
+    echo "Checking webui formatting with Prettier"
+    if ! npx prettier@3.5.3 --check .; then
+      echo "Webui files need formatting"
       exit 1
-    else
-      echo "Go formatting check passed"
     fi
   else
-    # In fix mode, we apply the formatting
-    echo "Fixing Go formatting with gofumpt"
-    gofumpt -w .
-    echo "Go formatting complete"
+    echo "Fixing webui formatting with Prettier"
+    npx prettier@3.5.3 --write .
+    echo "Webui formatting complete"
   fi
-) &
-GO_PID=$!
-
-# Run webui formatting in background
-(
-  echo "Checking webui formatting..."
-  if [ -d "./webui" ]; then
-    cd webui
-    if [ "$CHECK_MODE" = true ]; then
-      echo "Checking webui formatting with Prettier"
-      if ! npx prettier@3.5.3 --check .; then
-        echo "Webui files need formatting"
-        exit 1
-      fi
-    else
-      echo "Fixing webui formatting with Prettier"
-      npx prettier@3.5.3 --write .
-      echo "Webui formatting complete"
-    fi
-  else
-    echo "No webui directory found, skipping Prettier check"
-  fi
-) &
-WEBUI_PID=$!
-
-# Wait for both processes and capture exit codes
-wait $GO_PID
-GO_EXIT=$?
-wait $WEBUI_PID
-WEBUI_EXIT=$?
-
-# Exit with error if either formatter failed
-if [ $GO_EXIT -ne 0 ] || [ $WEBUI_EXIT -ne 0 ]; then
-  exit 1
+else
+  echo "No webui directory found, skipping Prettier check"
 fi
 
 if [ "$CHECK_MODE" = true ]; then