Update Ruby version to 3.4.7 and add bigdecimal dependency

Author: JDrizzy

.ruby-version

@@ -1 +1 @@
-3.4.5
+3.4.7

Gemfile.lock

@@ -3,6 +3,7 @@ PATH
   specs:
     business-central (2.0.0)
       base64 (~> 0.3.0)
+      bigdecimal (~> 4.1.1)
       oauth2 (~> 2)
 
 GEM
@@ -13,6 +14,7 @@ GEM
     ansi (1.5.0)
     ast (2.4.2)
     base64 (0.3.0)
+    bigdecimal (4.1.1)
     builder (3.2.4)
     byebug (11.1.3)
     crack (0.4.5)

business-central.gemspec

@@ -28,6 +28,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rubocop', '~> 1.32'
   spec.add_development_dependency 'simplecov', '~> 0.21'
   spec.add_development_dependency 'webmock', '~> 3.12'
-  spec.add_runtime_dependency 'base64', '~> 0.3.0'
+  spec.add_runtime_dependency 'base64', '~> 0.3.0' # ruby 3.4.0+
+  spec.add_runtime_dependency 'bigdecimal', '~> 4.1.1' # ruby 3.4.0+
   spec.add_runtime_dependency 'oauth2', '~> 2'
 end