change requirements.txt

requirements.txt

@@ -1,9 +1,12 @@
-PyYAML==3.12
-backports-abc==0.4
-backports.ssl-match-hostname==3.5.0.1
-certifi==2016.8.31
-requests==2.11.1
-singledispatch==3.4.0.3
-six==1.10.0
-tornado==4.4.1
-wsgiref==0.1.2
+backports-abc==0.5
+backports.ssl-match-hostname==3.7.0.1
+certifi==2021.5.30
+charset-normalizer==2.0.6
+idna==3.2
+pyepics==3.5.0
+PyYAML==5.4.1
+requests==2.26.0
+singledispatch==3.7.0
+six==1.16.0
+tornado==6.1
+urllib3==1.26.7