Upgrade pytz to 2020.1 (#35174)

homeassistant/package_constraints.txt

@@ -18,7 +18,7 @@ jinja2>=2.11.1
 netdisco==2.6.0
 pip>=8.0.3
 python-slugify==4.0.0
-pytz>=2019.03
+pytz>=2020.1
 pyyaml==5.3.1
 requests==2.23.0
 ruamel.yaml==0.15.100

requirements_all.txt

@@ -12,7 +12,7 @@ PyJWT==1.7.1
 cryptography==2.9.2
 pip>=8.0.3
 python-slugify==4.0.0
-pytz>=2019.03
+pytz>=2020.1
 pyyaml==5.3.1
 requests==2.23.0
 ruamel.yaml==0.15.100

setup.py

@@ -46,7 +46,7 @@ REQUIRES = [
     "cryptography==2.9.2",
     "pip>=8.0.3",
     "python-slugify==4.0.0",
-    "pytz>=2019.03",
+    "pytz>=2020.1",
     "pyyaml==5.3.1",
     "requests==2.23.0",
     "ruamel.yaml==0.15.100",