Bump rexml from 3.2.7 to 3.3.3 in /docs

Bumps [rexml](https://github.com/ruby/rexml) from 3.2.7 to 3.3.3.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.2.7...v3.3.3)

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

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

docs/Gemfile.lock

@@ -32,14 +32,17 @@ GEM
       safe_yaml (~> 1.0)
       terminal-table (>= 1.8, < 4.0)
       webrick (~> 1.7)
+    jekyll-include-cache (0.2.1)
+      jekyll (>= 3.7, < 5.0)
     jekyll-sass-converter (3.0.0)
       sass-embedded (~> 1.54)
     jekyll-seo-tag (2.8.0)
       jekyll (>= 3.8, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    just-the-docs (0.5.4)
+    just-the-docs (0.8.2)
       jekyll (>= 3.8.5)
+      jekyll-include-cache
       jekyll-seo-tag (>= 2.0)
       rake (>= 12.3.1)
     kramdown (2.4.0)
@@ -58,12 +61,14 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.7)
+    rexml (3.3.3)
+      strscan
     rouge (3.30.0)
     safe_yaml (1.0.5)
     sass-embedded (1.58.3)
       google-protobuf (~> 3.21)
       rake (>= 10.0.0)
+    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.5.0)
@@ -75,7 +80,7 @@ PLATFORMS
 
 DEPENDENCIES
   jekyll (~> 4.3.2)
-  just-the-docs (= 0.5.4)
+  just-the-docs (= 0.8.2)
 
 BUNDLED WITH
    2.3.26