Update pypy

Changes:

- https://github.com/docker-library/pypy/commit/cb0fa7e: Update to 7.3.0, pip 20.0.1

library/pypy

@@ -6,20 +6,20 @@ GitRepo: https://github.com/docker-library/pypy.git
 
 Tags: 2.7-7.3.0, 2.7-7.3, 2.7-7, 2.7, 2-7.3.0, 2-7.3, 2-7, 2, 2.7-7.3.0-jessie, 2.7-7.3-jessie, 2.7-7-jessie, 2.7-jessie, 2-7.3.0-jessie, 2-7.3-jessie, 2-7-jessie, 2-jessie
 Architectures: amd64, i386
-GitCommit: a0803d85f93226ab526a6645660cc228b773474a
+GitCommit: cb0fa7e73f2f66b40fbcedc9f24c48cf50964f37
 Directory: 2.7
 
 Tags: 2.7-7.3.0-slim, 2.7-7.3-slim, 2.7-7-slim, 2.7-slim, 2-7.3.0-slim, 2-7.3-slim, 2-7-slim, 2-slim, 2.7-7.3.0-slim-jessie, 2.7-7.3-slim-jessie, 2.7-7-slim-jessie, 2.7-slim-jessie, 2-7.3.0-slim-jessie, 2-7.3-slim-jessie, 2-7-slim-jessie, 2-slim-jessie
 Architectures: amd64, i386
-GitCommit: a0803d85f93226ab526a6645660cc228b773474a
+GitCommit: cb0fa7e73f2f66b40fbcedc9f24c48cf50964f37
 Directory: 2.7/slim
 
 Tags: 3.6-7.3.0, 3.6-7.3, 3.6-7, 3.6, 3-7.3.0, 3-7.3, 3-7, 3, latest, 3.6-7.3.0-stretch, 3.6-7.3-stretch, 3.6-7-stretch, 3.6-stretch, 3-7.3.0-stretch, 3-7.3-stretch, 3-7-stretch, 3-stretch, stretch
 Architectures: amd64, arm64v8, i386, ppc64le, s390x
-GitCommit: 5fc3ee65a752fbd6fc6bc2add5dc81b95b403ad9
+GitCommit: cb0fa7e73f2f66b40fbcedc9f24c48cf50964f37
 Directory: 3.6
 
 Tags: 3.6-7.3.0-slim, 3.6-7.3-slim, 3.6-7-slim, 3.6-slim, 3-7.3.0-slim, 3-7.3-slim, 3-7-slim, 3-slim, slim, 3.6-7.3.0-slim-stretch, 3.6-7.3-slim-stretch, 3.6-7-slim-stretch, 3.6-slim-stretch, 3-7.3.0-slim-stretch, 3-7.3-slim-stretch, 3-7-slim-stretch, 3-slim-stretch, slim-stretch
 Architectures: amd64, arm64v8, i386, ppc64le, s390x
-GitCommit: 5fc3ee65a752fbd6fc6bc2add5dc81b95b403ad9
+GitCommit: cb0fa7e73f2f66b40fbcedc9f24c48cf50964f37
 Directory: 3.6/slim