Bump stringio from 3.1.2 to 3.1.3

Bumps [stringio](https://github.com/ruby/stringio) from 3.1.2 to 3.1.3.
- [Release notes](https://github.com/ruby/stringio/releases)
- [Changelog](https://github.com/ruby/stringio/blob/master/NEWS.md)
- [Commits](ruby/stringio@v3.1.2...v3.1.3)

---
updated-dependencies:
- dependency-name: stringio
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -345,7 +345,7 @@ GEM
       actionpack (>= 6.1)
       activesupport (>= 6.1)
       sprockets (>= 3.0.0)
-    stringio (3.1.2)
+    stringio (3.1.3)
     terminal-table (4.0.0)
       unicode-display_width (>= 1.1.1, < 4)
     thor (1.3.2)
@@ -567,7 +567,7 @@ CHECKSUMS
   sitemap_generator (6.3.0) sha256=1d803cbf03c44736bea05b9e3363d3523fec4e24f3abedad294d9c57cab994f3
   sprockets (4.2.1) sha256=951b13dd2f2fcae840a7184722689a803e0ff9d2702d902bd844b196da773f97
   sprockets-rails (3.5.2) sha256=a9e88e6ce9f8c912d349aa5401509165ec42326baf9e942a85de4b76dbc4119e
-  stringio (3.1.2) sha256=204f1828f85cdb39d57cac4abc6dc44b04505a223f131587f2e20ae3729ba131
+  stringio (3.1.3) sha256=1eedb8369ee99a9a0edfdacea95c72d647feb8ce844427c150bd641e1797abc8
   terminal-table (4.0.0) sha256=f504793203f8251b2ea7c7068333053f0beeea26093ec9962e62ea79f94301d2
   thor (1.3.2) sha256=eef0293b9e24158ccad7ab383ae83534b7ad4ed99c09f96f1a6b036550abbeda
   tilt (2.6.0) sha256=263d748466e0d83e510aa1a2e2281eff547937f0ef06be33d3632721e255f76b