Bump urllib3 from 1.26.18 to 1.26.19

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.18 to 1.26.19.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/1.26.19/CHANGES.rst)
- [Commits](https://github.com/urllib3/urllib3/compare/1.26.18...1.26.19)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Pipfile

@@ -57,7 +57,7 @@ static3 = "~=0.7.0"
 svg2rlg = "~=0.3"
 tini = "~=3.0.1"
 tornado = "~=6.3"
-urllib3 = "~=1.26.18"
+urllib3 = "~=1.26.19"
 whitenoise = "~=5.2.0"
 yolk = "~=0.4.3"
 zipp = "~=3.4.0"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "411e277c026f8628f74377ae59084d78697965f120561456d0bb77c358cf46d9"
+            "sha256": "641c8452654d194106ec4339baeab760361695bbe91edf7f0c7483551656ab8e"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -1253,12 +1253,12 @@
                 "socks"
             ],
             "hashes": [
-                "sha256:34b97092d7e0a3a8cf7cd10e386f401b3737364026c45e622aa02903dffe0f07",
-                "sha256:f8ecc1bba5667413457c529ab955bf8c67b45db799d159066261719e328580a0"
+                "sha256:37a0344459b199fce0e80b0d3569837ec6b6937435c5244e7fd73fa6006830f3",
+                "sha256:3e3d753a8618b86d7de333b4223005f68720bcd6a7d2bcb9fbd2229ec7c1e429"
             ],
             "index": "pypi",
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'",
-            "version": "==1.26.18"
+            "version": "==1.26.19"
         },
         "webencodings": {
             "hashes": [