test(instrumentation-mysql2): fix error in .tav.yml that resulted in no command to run (#3158)

Author: trentm

packages/instrumentation-mysql2/.tav.yml

@@ -5,8 +5,8 @@ mysql2:
       # Skip 2.3.3 which installs types from git which takes 10m on its own
       exclude: "1.6.2 || 2.3.3"
       mode: max-3
-      commands: npm run test
+    commands: npm run test
   - versions:
       include: ">=3 <4"
       mode: max-7
-      commands: npm run test
+    commands: npm run test