[8.18] Update uri gem required by Logstash (backport #17495) (#17500)

* Update uri gem required by Logstash (#17495)

(cherry picked from commit cb4c234)

# Conflicts:
#	Gemfile.template

* Removed git merge tags

* Fix comment for pinned 'uri' gem version

* Remove pinned cgi gem from Gemfile

---------

Co-authored-by: Andrea Selva <[email protected]>

Author: mergify[bot]

Gemfile.template

@@ -46,4 +46,5 @@ gem "thwait"
 gem "bigdecimal", "~> 3.1"
 
 gem "psych", "5.2.2"
+gem "uri", "0.12.3" # Pins until a new jruby version with updated uri is released
 gem "cgi", "0.3.7" # Pins until a new jruby version with updated cgi is released