Check for toml updates only

.github/workflows/update-cow-dependencies.yaml

@@ -31,7 +31,16 @@ jobs:
         run: |
           sed -i '/git = "https:\/\/github.com\/cowprotocol\/services.git"/!b; s/tag = "[^"]*"/tag = "${{ env.TAG }}"/g' ./Cargo.toml
 
+      - name: Check for changes
+        run: |
+          git diff --exit-code || echo "CHANGES_DETECTED=true" >> $GITHUB_ENV
+
+      - name: No changes detected
+        if: env.CHANGES_DETECTED != 'true'
+        run: echo "No updates necessary. Dependencies are already up-to-date."
+
       - name: Identify and update specific CoW dependencies in Cargo.lock
+        if: env.CHANGES_DETECTED != 'true'
         run: |
           PACKAGES=$(grep -oP 'package = "\K[^"]*' <(grep -B1 'git = "https:\/\/github.com\/cowprotocol\/services.git"' Cargo.toml))
           echo "Identified packages: $PACKAGES"
@@ -40,14 +49,6 @@ jobs:
             cargo update -p $package
           done
 
-      - name: Check for changes
-        run: |
-          git diff --exit-code || echo "CHANGES_DETECTED=true" >> $GITHUB_ENV
-
-      - name: No changes detected
-        if: env.CHANGES_DETECTED != 'true'
-        run: echo "No updates necessary. Dependencies are already up-to-date."
-
       - name: Commit changes
         if: env.CHANGES_DETECTED == 'true'
         id: commit