Update sqlite3 requirement from ~> 1.4 to ~> 2.9

Updates the requirements on [sqlite3](https://github.com/sparklemotion/sqlite3-ruby) to permit the latest version.
- [Release notes](https://github.com/sparklemotion/sqlite3-ruby/releases)
- [Changelog](https://github.com/sparklemotion/sqlite3-ruby/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/sqlite3-ruby@v1.4.0...v2.9.0)

---
updated-dependencies:
- dependency-name: sqlite3
  dependency-version: 2.9.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

publify_textfilter_code.gemspec

@@ -32,6 +32,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency "rubocop-rspec", "~> 3.7.0"
   s.add_development_dependency "rubocop-rspec_rails", "~> 2.32.0"
   s.add_development_dependency "simplecov", "~> 0.22.0"
-  s.add_development_dependency "sqlite3", "~> 1.4"
+  s.add_development_dependency "sqlite3", "~> 2.9"
   s.metadata["rubygems_mfa_required"] = "true"
 end