Revert moto change (#859)

Author: lzchen

instrumentation/opentelemetry-instrumentation-botocore/setup.cfg

@@ -46,7 +46,7 @@ install_requires =
 
 [options.extras_require]
 test =
-    moto[all] ~= 2.3.1
+    moto[all] ~= 2.2.6
     opentelemetry-test-utils == 0.27b0
 
 [options.packages.find]