Skip requests tests for pypy3 (#1806)

Author: shalevr

tox.ini

@@ -93,7 +93,7 @@ envlist =
 
     ; opentelemetry-instrumentation-requests
     py3{7,8,9,10,11}-test-instrumentation-requests
-    pypy3-test-instrumentation-requests
+    ;pypy3-test-instrumentation-requests
 
     ; opentelemetry-instrumentation-starlette.
     py3{7,8,9,10,11}-test-instrumentation-starlette