Bump rqrcode from 2.2.0 to 3.1.0

Bumps [rqrcode](https://github.com/whomwah/rqrcode) from 2.2.0 to 3.1.0.
- [Release notes](https://github.com/whomwah/rqrcode/releases)
- [Changelog](https://github.com/whomwah/rqrcode/blob/main/CHANGELOG.md)
- [Commits](whomwah/rqrcode@v2.2.0...v3.1.0)

---
updated-dependencies:
- dependency-name: rqrcode
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Gemfile

@@ -12,4 +12,4 @@ gem "jekyll-scholar"
 gem "jekyll-assets", path: "_gems/jekyll-assets"
 gem "uglifier"
 gem "ruby-vips"
-gem "rqrcode", "~> 2.0"
+gem "rqrcode", "~> 3.1"

Gemfile.lock

@@ -154,10 +154,10 @@ GEM
       ffi (~> 1.0)
     rexml (3.4.0)
     rouge (4.5.1)
-    rqrcode (2.2.0)
+    rqrcode (3.1.0)
       chunky_png (~> 1.0)
-      rqrcode_core (~> 1.0)
-    rqrcode_core (1.2.0)
+      rqrcode_core (~> 2.0)
+    rqrcode_core (2.0.0)
     ruby-vips (2.2.3)
       ffi (~> 1.12)
       logger
@@ -197,7 +197,7 @@ DEPENDENCIES
   jekyll-redirect-from
   jekyll-scholar
   jekyll-seo-tag!
-  rqrcode (~> 2.0)
+  rqrcode (~> 3.1)
   ruby-vips
   uglifier