ext: update native gem packaging to add 3.2 and drop 2.6

Author: flavorjones

CHANGELOG.md

@@ -1,5 +1,14 @@
 # sqlite3-ruby Changelog
 
+## next / unreleased
+
+### Ruby
+
+This release introduces native gem support for Ruby 3.2.
+
+This release ends native gem support for Ruby 2.6, for which [upstream support ended 2022-04-12](https://www.ruby-lang.org/en/downloads/branches/).
+
+
 ## 1.5.4 / 2022-11-18
 
 ### Dependencies

rakelib/native.rake

@@ -6,7 +6,7 @@ require "rake/extensiontask"
 require "rake_compiler_dock"
 require "yaml"
 
-cross_rubies = ["3.1.0", "3.0.0", "2.7.0", "2.6.0"]
+cross_rubies = ["3.2.0", "3.1.0", "3.0.0", "2.7.0"]
 cross_platforms = [
   "aarch64-linux",
   "arm-linux",