Bump stringio from 3.1.1 to 3.1.2 (#1286)

Bumps [stringio](https://github.com/ruby/stringio) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/ruby/stringio/releases)
- [Changelog](https://github.com/ruby/stringio/blob/master/NEWS.md)
- [Commits](ruby/stringio@v3.1.1...v3.1.2)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -306,7 +306,7 @@ GEM
     standard-performance (1.5.0)
       lint_roller (~> 1.1)
       rubocop-performance (~> 1.22.0)
-    stringio (3.1.1)
+    stringio (3.1.2)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     thor (1.3.2)
@@ -478,7 +478,7 @@ CHECKSUMS
   standard (1.41.1) sha256=ac244a770e1ede2630ebb501877cb2089cb626a837bd80e7487ed8f21099e12b
   standard-custom (1.0.2) sha256=424adc84179a074f1a2a309bb9cf7cd6bfdb2b6541f20c6bf9436c0ba22a652b
   standard-performance (1.5.0) sha256=0a97ecf30af7f1148cb71b668f2fcda6ea5fc0a64f48011ac653d1eceb9faf31
-  stringio (3.1.1) sha256=53456e14175c594e0e8eb2206a1be33f3974d4fe21c131e628908b05c8c2ae1e
+  stringio (3.1.2) sha256=204f1828f85cdb39d57cac4abc6dc44b04505a223f131587f2e20ae3729ba131
   terminal-table (3.0.2) sha256=f951b6af5f3e00203fb290a669e0a85c5dd5b051b3b023392ccfd67ba5abae91
   thor (1.3.2) sha256=eef0293b9e24158ccad7ab383ae83534b7ad4ed99c09f96f1a6b036550abbeda
   thruster (0.1.8) sha256=af344f0955d16462c663fbf1658a4c49b134151f0b49d1fcb261d13302d181a0