Store perl/python/icu/ruby versions for packages as constants in const.rb (#10528)

* Adjust const.rb and packages to use generated version constants.

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* Update gem binaries

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* Update update scripts.

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* Libxml2 => 2.13.4

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* Adjust install.sh to handle new gem package versioning suffix.

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* update openimageio

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* update py3_ruff

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* add pip binaries

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* Move activesupport gem behind requre_gem function.

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* Adjust file path in ruby_pry.

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

* lint

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

---------

Signed-off-by: Satadru Pramanik <satadru@gmail.com>

lib/downloader.rb

@@ -1,4 +1,3 @@
-require 'active_support/core_ext/object/blank'
 require 'digest/sha2'
 require 'io/console'
 require 'uri'
@@ -6,6 +5,27 @@ require_relative 'const'
 require_relative 'color'
 require_relative 'progress_bar'
 
+def require_gem(gem_name_and_require = nil, require_override = nil)
+  # Allow only loading gems when needed.
+  return if gem_name_and_require.nil?
+
+  gem_name = gem_name_and_require.split('/')[0]
+  begin
+    gem gem_name
+  rescue LoadError
+    puts " -> install #{gem_name} gem".orange
+    Gem.install(gem_name)
+    gem gem_name
+  end
+  requires = if require_override.nil?
+               gem_name_and_require.split('/')[1].nil? ? gem_name_and_require.split('/')[0] : gem_name_and_require
+             else
+               require_override
+             end
+  require requires
+end
+require_gem('activesupport', 'active_support/core_ext/object/blank')
+
 begin
   require 'securerandom'
   require 'resolv-replace'