Bump rdoc from 6.5.0 to 6.6.3.1 in /src/oc-id

Bumps [rdoc](https://github.com/ruby/rdoc) from 6.5.0 to 6.6.3.1.
- [Release notes](https://github.com/ruby/rdoc/releases)
- [Changelog](https://github.com/ruby/rdoc/blob/master/History.rdoc)
- [Commits](ruby/rdoc@v6.5.0...v6.6.3.1)

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

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

src/oc-id/Gemfile.lock

@@ -380,7 +380,7 @@ GEM
     pry-byebug (3.10.1)
       byebug (~> 11.0)
       pry (>= 0.13, < 0.15)
-    psych (5.1.0)
+    psych (5.1.2)
       stringio
     public_suffix (5.0.3)
       nio4r (~> 2.0)
@@ -423,7 +423,7 @@ GEM
     raindrops (0.20.1)
     rake (13.0.6)
     rb-readline (0.5.5)
-    rdoc (6.5.0)
+    rdoc (6.6.3.1)
       psych (>= 4.0.0)
     regexp_parser (2.8.1)
     responders (3.1.0)
@@ -496,7 +496,7 @@ GEM
     sqlite3-ruby (1.3.3)
       sqlite3 (>= 1.3.3)
     sslshake (1.3.1)
-    stringio (3.0.6)
+    stringio (3.1.0)
     strings (0.2.1)
       strings-ansi (~> 0.2)
       unicode-display_width (>= 1.5, < 3.0)