fix: replace bash if condition

Author: sigmaaa

.github/workflows/ci.yml

@@ -138,12 +138,11 @@ jobs:
           java-version: '21'
           distribution: 'temurin'
 
-      - name: Run Tests
-        run: |
-          if [ "${{ matrix.os }}" = "linux" ]; then
-            export NO_AT_BRIDGE=1
-          fi
-          mvn verify -Djarsigner.skip=true -DskipTests=false -DtestWorkspace="${{ matrix.testWorkspace }}"
+      - name: Set NO_AT_BRIDGE
+        if: runner.os == 'linux'
+        run: export NO_AT_BRIDGE=1
+      - name: Run Maven
+        run: mvn verify -Djarsigner.skip=true -DskipTests=false -DtestWorkspace="${{ matrix.testWorkspace }}"
 
       - name: Publish Test Reports
         if: ${{ always() }}