Bump sqlite3 from 2.5.0 to 2.6.0 in /graph-sample

Bumps [sqlite3](https://github.com/sparklemotion/sqlite3-ruby) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/sparklemotion/sqlite3-ruby/releases)
- [Changelog](https://github.com/sparklemotion/sqlite3-ruby/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/sqlite3-ruby@v2.5.0...v2.6.0)

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

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

Author: dependabot[bot]

graph-sample/Gemfile

@@ -10,7 +10,7 @@ gem "rails", "~> 7.2.2"
 gem "sprockets-rails"
 
 # Use sqlite3 as the database for Active Record
-gem "sqlite3", "~> 2.5"
+gem "sqlite3", "~> 2.6"
 
 # Use the Puma web server [https://github.com/puma/puma]
 gem "puma", "~> 6.6"

graph-sample/Gemfile.lock

@@ -255,7 +255,7 @@ GEM
       actionpack (>= 6.1)
       activesupport (>= 6.1)
       sprockets (>= 3.0.0)
-    sqlite3 (2.5.0-x86_64-linux-gnu)
+    sqlite3 (2.6.0-x86_64-linux-gnu)
     stimulus-rails (1.3.4)
       railties (>= 6.0.0)
     stringio (3.1.2)
@@ -304,7 +304,7 @@ DEPENDENCIES
   rails (~> 7.2.2)
   selenium-webdriver
   sprockets-rails
-  sqlite3 (~> 2.5)
+  sqlite3 (~> 2.6)
   stimulus-rails
   turbo-rails
   tzinfo-data