fix: remove unnecessary working dir

Author: 0marperez

.github/workflows/continuous-integration.yml

@@ -69,7 +69,6 @@ jobs:
           gradle wrapper --gradle-distribution-url https://d2pjps8lqszrgq.cloudfront.net/gradle-8.12-bin.zip
       - name: Test
         shell: bash
-        working-directory: ./smithy-kotlin
         run: |
           # FIXME K2. Re-enable warnings as errors after this warning is removed: https://youtrack.jetbrains.com/issue/KT-68532
           # echo "kotlinWarningsAsErrors=true" >> $GITHUB_WORKSPACE/local.properties