Bump urllib3 from 1.26.5 to 1.26.19 in /installer (#4761)

Author: dependabot[bot]

installer/requirements.txt

@@ -1,4 +1,4 @@
-urllib3==1.26.5
+urllib3==1.26.19
 click==7.1.2
 progressbar33==2.4
 psutil==5.9.0

installer/setup.py

@@ -16,7 +16,7 @@
         "requests_unixsocket==0.1.5",
         "simplejson==3.8.2",
         "toml==0.10.0",
-        "urllib3==1.26.5",
+        "urllib3==1.26.19",
     ],
     platforms="any",
     entry_points={