v8.3.0

What's Changed

• Update tests to use latest rails versions by @jcoyne in #3171
• Require rubocop that we use by @jcoyne in #3179
• Add new rubocop rules by @jcoyne in #3183
• Adjust the flash message to be in a container if we use the full-widt… by @jcoyne in #3177
• Update target ruby version for rubocop by @jcoyne in #3182
• Upgrade tested versions of ruby and rails by @jcoyne in #3180
• Test on view_component 3 by default by @jcoyne in #3172
• Remove extraneous solr 9 config by @jcoyne in #3181
• Remove unused sass code by @jcoyne in #3185

Full Changelog: v8.2.2...v8.3.0