build(deps): bump urllib3 from 1.21.1 to 1.26.18

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.21.1 to 1.26.18.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.21.1...1.26.18)

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

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

requirements.txt

@@ -24,6 +24,6 @@ idna==2.8 --hash=sha256:ea8b7f6188e6fa117537c3df7da9fc686d485087abf6ac197f9c4643
 requests-file==1.5.1 --hash=sha256:dfe5dae75c12481f68ba353183c53a65e6044c923e64c24b2209f6c7570ca953
 six==1.14.0 --hash=sha256:8f3cd2e254d8f793e7f3d6d9df77b92252b52637291d0f0da013c76ea2724b6c
 requests==2.22.0 --hash=sha256:9cf5292fcd0f598c671cfc1e0d7d1a7f13bb8085e9a590f48c010551dc6c4b31
-urllib3==1.21.1 --hash=sha256:8ed6d5c1ff9d6ba84677310060d6a3a78ca3072ce0684cb3c645023009c114b1
+urllib3==1.26.18 --hash=sha256:34b97092d7e0a3a8cf7cd10e386f401b3737364026c45e622aa02903dffe0f07 --hash=sha256:f8ecc1bba5667413457c529ab955bf8c67b45db799d159066261719e328580a0
 certifi==2023.7.22 --hash=sha256:539cc1d13202e33ca466e88b2807e29f4c13049d6d87031a3c110744495cb082 --hash=sha256:92d6037539857d8206b8f6ae472e8b77db8058fec5937a1ef3f54304089edbb9
 charset-normalizer==3.1.0 --hash=sha256:21fa558996782fc226b529fdd2ed7866c2c6ec91cee82735c98a197fae39f706