Bump the bundler group across 1 directory with 4 updates

Bumps the bundler group with 3 updates in the /backend directory: [rack](https://github.com/rack/rack), [activesupport](https://github.com/rails/rails) and [faraday](https://github.com/lostisland/faraday).


Updates `rack` from 3.2.4 to 3.2.6
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rack/rack/compare/v3.2.4...v3.2.6)

Updates `activesupport` from 8.1.1 to 8.1.2.1
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v8.1.3/activesupport/CHANGELOG.md)
- [Commits](https://github.com/rails/rails/compare/v8.1.1...v8.1.2.1)

Updates `faraday` from 2.14.0 to 2.14.1
- [Release notes](https://github.com/lostisland/faraday/releases)
- [Changelog](https://github.com/lostisland/faraday/blob/main/CHANGELOG.md)
- [Commits](https://github.com/lostisland/faraday/compare/v2.14.0...v2.14.1)

Updates `json` from 2.17.1 to 2.19.3
- [Release notes](https://github.com/ruby/json/releases)
- [Changelog](https://github.com/ruby/json/blob/master/CHANGES.md)
- [Commits](https://github.com/ruby/json/compare/v2.17.1...v2.19.3)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.2.6
  dependency-type: direct:production
  dependency-group: bundler
- dependency-name: activesupport
  dependency-version: 8.1.2.1
  dependency-type: indirect
  dependency-group: bundler
- dependency-name: faraday
  dependency-version: 2.14.1
  dependency-type: indirect
  dependency-group: bundler
- dependency-name: json
  dependency-version: 2.19.3
  dependency-type: indirect
  dependency-group: bundler
...

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

backend/Gemfile.lock

@@ -1,9 +1,9 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (8.1.1)
-      activesupport (= 8.1.1)
-    activesupport (8.1.1)
+    activemodel (8.1.2.1)
+      activesupport (= 8.1.2.1)
+    activesupport (8.1.2.1)
       base64
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.3.1)
@@ -26,10 +26,10 @@ GEM
       norairrecord (>= 0.1.0)
     attr_required (1.0.2)
     base64 (0.3.0)
-    bigdecimal (3.3.1)
+    bigdecimal (4.1.0)
     bindata (2.5.1)
-    concurrent-ruby (1.3.5)
-    connection_pool (2.5.5)
+    concurrent-ruby (1.3.6)
+    connection_pool (3.0.2)
     date (3.5.0)
     dotenv (3.2.0)
     drb (2.2.3)
@@ -46,8 +46,8 @@ GEM
       concurrent-ruby (~> 1.0)
       dry-core (~> 1.1)
       zeitwerk (~> 2.6)
-    dry-types (1.8.3)
-      bigdecimal (~> 3.0)
+    dry-types (1.9.1)
+      bigdecimal (>= 3.0)
       concurrent-ruby (~> 1.0)
       dry-core (~> 1.0)
       dry-inflector (~> 1.0)
@@ -55,7 +55,7 @@ GEM
       zeitwerk (~> 2.6)
     email_validator (2.2.4)
       activemodel
-    faraday (2.14.0)
+    faraday (2.14.1)
       faraday-net_http (>= 2.0, < 3.5)
       json
       logger
@@ -74,9 +74,9 @@ GEM
       rack (>= 2)
       zeitwerk
     hashie (5.0.0)
-    i18n (1.14.7)
+    i18n (1.14.8)
       concurrent-ruby (~> 1.0)
-    json (2.17.1)
+    json (2.19.3)
     json-jwt (1.17.0)
       activesupport (>= 4.2)
       aes_key_wrap
@@ -92,15 +92,17 @@ GEM
       net-pop
       net-smtp
     mini_mime (1.1.5)
-    minitest (5.26.2)
+    minitest (6.0.3)
+      drb (~> 2.0)
+      prism (~> 1.5)
     mustermann (3.0.4)
       ruby2_keywords (~> 0.0.1)
     mustermann-grape (1.1.0)
       mustermann (>= 1.0.0)
-    net-http (0.8.0)
+    net-http (0.9.1)
       uri (>= 0.11.1)
-    net-http-persistent (4.0.6)
-      connection_pool (~> 2.2, >= 2.2.4)
+    net-http-persistent (4.0.8)
+      connection_pool (>= 2.2.4, < 4)
     net-imap (0.5.12)
       date
       net-protocol
@@ -136,10 +138,11 @@ GEM
       tzinfo
       validate_url
       webfinger (~> 2.0)
+    prism (1.9.0)
     public_suffix (7.0.0)
     puma (7.1.0)
       nio4r (~> 2.0)
-    rack (3.2.4)
+    rack (3.2.6)
     rack-cors (3.0.0)
       logger
       rack (>= 3.0.14)