Upgrade requests a chunk

3rdparty/python/requirements.txt

@@ -9,6 +9,7 @@ cryptography>=2.8,<2.9
 cffi==1.11.1
 contextlib2==0.5.5
 coverage>=4.5,<4.6
+docker==3.4.1             # Pinned for cross-platform agreement.
 docutils>=0.12,<0.13
 fasteners==0.14.1
 faulthandler==2.6
@@ -29,13 +30,13 @@ pystache==0.5.3
 pytest-cov>=2.5,<2.6
 pytest>=3.4,<4.0
 pywatchman==1.4.1
-requests<=2.8.14  # Removed [security] set, the unpinned cryptography is unbuildable for python2.7
+requests<=2.23.0  # Removed [security] set, the unpinned cryptography is unbuildable for python2.7
 requests_futures>=0.9.4,<0.10
 scandir==1.2
 setproctitle==1.1.10
 setuptools==30.0.0
 subprocess32==3.2.7
 six>=1.9.0,<2
 thrift>=0.9.1
-urllib3<1.25.11,>=1.20
+urllib3<1.24,>=1.21.1
 wheel==0.29.0