Bump sqlite3 from 1.6.7 to 1.6.8

Bumps [sqlite3](https://github.com/sparklemotion/sqlite3-ruby) from 1.6.7 to 1.6.8.
- [Release notes](https://github.com/sparklemotion/sqlite3-ruby/releases)
- [Changelog](https://github.com/sparklemotion/sqlite3-ruby/blob/master/CHANGELOG.md)
- [Commits](sparklemotion/sqlite3-ruby@v1.6.7...v1.6.8)

---
updated-dependencies:
- dependency-name: sqlite3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -240,7 +240,7 @@ GEM
       sorbet-static-and-runtime (>= 0.5.10187)
       syntax_tree (>= 6.1.1)
       thor (>= 0.19.2)
-    sqlite3 (1.6.7)
+    sqlite3 (1.6.8)
       mini_portile2 (~> 2.8.0)
     stringio (3.0.8)
     syntax_tree (6.2.0)