Update sqlite3 requirement from ~> 1.7.0 to ~> 2.0.0

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@v1.7.0...v2.0.0)

---
updated-dependencies:
- dependency-name: sqlite3
  dependency-type: direct:production
...

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

Gemfile

@@ -7,7 +7,7 @@ gem "rails", ["~> 6.1.6", ">= 6.1.6.1"]
 
 gem "mysql2"
 gem "pg"
-gem "sqlite3", "~> 1.7.0"
+gem "sqlite3", "~> 2.0.0"
 
 # Store sessions in the database
 gem "activerecord-session_store", "~> 2.1.0"