Bump addressable from 2.8.6 to 2.9.0 in /docs

Bumps [addressable](https://github.com/sporkmonger/addressable) from 2.8.6 to 2.9.0.
- [Changelog](https://github.com/sporkmonger/addressable/blob/main/CHANGELOG.md)
- [Commits](sporkmonger/addressable@addressable-2.8.6...addressable-2.9.0)

---
updated-dependencies:
- dependency-name: addressable
  dependency-version: 2.9.0
  dependency-type: indirect
...

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

Author: dependabot[bot]

docs/Gemfile.lock

@@ -11,8 +11,8 @@ GEM
       minitest (>= 5.1)
       mutex_m
       tzinfo (~> 2.0)
-    addressable (2.8.6)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     base64 (0.2.0)
     bigdecimal (3.1.8)
     coffee-script (2.4.1)
@@ -235,7 +235,7 @@ GEM
       forwardable-extended (~> 2.6)
     props (1.2.0)
       iniparser (>= 0.1.0)
-    public_suffix (5.0.5)
+    public_suffix (5.1.1)
     racc (1.8.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)