fix: tweak CI workflow for more consistent output

.github/workflows/rust.yml

@@ -23,6 +23,13 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
+      - name: Install dependencies
+        run: |
+          ${{ matrix.os == 'ubuntu-latest'
+            && 'sudo apt-get update -q; sudo apt-get install -yq libglib2.0-dev'
+            || 'echo "No additional dependencies."'
+          }}
+
       - name: Check fmt
         run: cargo fmt --check
 
@@ -56,12 +63,6 @@ jobs:
                     || ''
                   }}GITHUB_ENV"
 
-      - name: Install Dependencies
-        if: ${{ matrix.os == 'ubuntu-latest' }}
-        run: |
-          sudo apt-get update
-          sudo apt-get install -yq libglib2.0-dev
-
       - name: Build
         run: cargo build --verbose