Keep CI on Ruby 3.4 without Ruby 4

Author: manuelfelipe

.github/workflows/ci.yml

@@ -13,7 +13,6 @@ jobs:
           - "3.2"
           - "3.3"
           - "3.4"
-          - "4.0"
     steps:
     - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
     - name: Set up Ruby ${{ matrix.ruby }}

Gemfile.lock

@@ -3,6 +3,9 @@ PATH
   specs:
     app_profiler (0.5.0)
       activesupport (>= 5.2)
+      base64
+      bigdecimal
+      mutex_m
       rack
       stackprof (~> 0.2)
 
@@ -30,6 +33,8 @@ GEM
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     ast (2.4.2)
+    base64 (0.3.0)
+    bigdecimal (4.1.2)
     builder (3.2.4)
     concurrent-ruby (1.1.6)
     crass (1.0.6)
@@ -125,6 +130,7 @@ GEM
     mocha (1.11.2)
     multi_json (1.15.0)
     multipart-post (2.1.1)
+    mutex_m (0.3.0)
     nokogiri (1.15.6)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)

app_profiler.gemspec

@@ -27,6 +27,9 @@ Gem::Specification.new do |spec|
   spec.metadata["allowed_push_host"] = "https://rubygems.org"
 
   spec.add_dependency("activesupport", ">= 5.2")
+  spec.add_dependency("base64")
+  spec.add_dependency("bigdecimal")
+  spec.add_dependency("mutex_m")
   spec.add_dependency("rack")
   spec.add_dependency("stackprof", "~> 0.2")