build(deps): bump urllib3 from 2.0.4 to 2.0.6 in /requirements

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.0.4 to 2.0.6.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.0.4...2.0.6)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements/base.txt

@@ -5,32 +5,24 @@
 #    make upgrade
 #
 attrs==23.1.0
-    # via -r requirements/base.in
+    # via -r base.in
 certifi==2023.7.22
     # via requests
 charset-normalizer==3.2.0
     # via requests
 click==8.1.6
     # via
-    #   -r requirements/base.in
+    #   -r base.in
     #   click-log
 click-log==0.4.0
-    # via -r requirements/base.in
+    # via -r base.in
 idna==3.4
     # via requests
-importlib-metadata==6.7.0
-    # via
-    #   attrs
-    #   click
 jinja2==3.1.2
-    # via -r requirements/base.in
+    # via -r base.in
 markupsafe==2.1.3
     # via jinja2
 requests==2.31.0
-    # via -r requirements/base.in
-typing-extensions==4.7.1
-    # via importlib-metadata
-urllib3==2.0.4
+    # via -r base.in
+urllib3==2.0.6
     # via requests
-zipp==3.15.0
-    # via importlib-metadata