Update tox.ini

Author: joshowen

Diff for: tox.ini

@@ -565,6 +565,8 @@ deps =
 
   psycopg2: {[testenv]test_deps}
   psycopg2: -r {toxinidir}/instrumentation/opentelemetry-instrumentation-psycopg2/test-requirements.txt
+
+  psycopg2-binary: {[testenv]test_deps}
   psycopg2-binary: -r {toxinidir}/instrumentation/opentelemetry-instrumentation-psycopg2/test-requirements-binary.txt
 
   pymysql: {[testenv]test_deps}