[1113] test에서 schema.sql 경로 수정

.github/workflows/test.yml

@@ -25,7 +25,7 @@ jobs:
     - uses: actions/checkout@v3
     - run: |
         go install github.com/sqldef/sqldef/cmd/mysqldef@latest
-        mysqldef -u todo -p todo -h 127.0.0.1 -P 3306 todo < ./_tools/mysql/schema.sql
+        mysqldef -u todo -p todo -h 127.0.0.1 -P 3306 todo < ./chapter18/section72/_tools/mysql/schema.sql
     - run: cd ${{ github.workspace }}/chapter18/section72 && go test ./... -coverprofile=coverage.out
     - name: report coverage
       uses: k1LoW/octocov-action@v0