ISSHA-1658 upgrade sphinx 2.1.0

requirements.txt

@@ -1,25 +1,24 @@
 alabaster==0.7.12
-Babel==2.6.0
+Babel==2.7.0
 certifi==2019.3.9
 chardet==3.0.4
 docutils==0.14
 idna==2.8
 imagesize==1.1.0
-Jinja2==2.10
+Jinja2==2.10.1
 MarkupSafe==1.1.1
 packaging==19.0
-Pygments==2.3.1
-pyparsing==2.3.1
-pytz==2018.9
-requests==2.21.0
+Pygments==2.4.2
+pyparsing==2.4.0
+pytz==2019.1
+requests==2.22.0
 six==1.12.0
 snowballstemmer==1.2.1
-Sphinx==2.0.0
+Sphinx==2.1.0
 sphinxcontrib-applehelp==1.0.1
 sphinxcontrib-devhelp==1.0.1
-sphinxcontrib-htmlhelp==1.0.1
+sphinxcontrib-htmlhelp==1.0.2
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.2
-sphinxcontrib-serializinghtml==1.1.1
-sphinxcontrib-websupport==1.1.0
-urllib3==1.24.1
+sphinxcontrib-serializinghtml==1.1.3
+urllib3==1.25.3