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:development
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -171,7 +171,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2023.0218.1)
     mini_mime (1.1.2)
-    mini_portile2 (2.8.4)
+    mini_portile2 (2.8.5)
     minitest (5.20.0)
     minitest-stub-const (0.6)
     mocha (2.1.0)
@@ -315,7 +315,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
-    sqlite3 (1.6.7)
+    sqlite3 (1.6.8)
       mini_portile2 (~> 2.8.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)