Fix contract invocation and ruby version support.

Author: TreyE

.github/workflows/rspec.yml

@@ -11,7 +11,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: vendor/bundle
-          key: ${{ runner.os }}-3.2.1-event_source-gems-${{ hashFiles('**/Gemfile.lock') }}-${{ hashFiles('**/Gemfile' ) }}
+          key: ${{ runner.os }}-3.2.1-event_source-gems-${{ hashFiles('**/event_source.gemspec') }}-${{ hashFiles('**/Gemfile' ) }}
       - name: bundle install
         run: |
           bundle config path vendor/bundle
@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby_version: ['2.7.5', '3.0.5', '3.1.4', '3.2.2']
+        ruby_version: ['2.7.5', '3.0.5', '3.1.4', '3.2.2', '3.3.8', '3.4.4']
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -39,7 +39,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: vendor/bundle
-          key: ${{ runner.os }}-${{matrix.ruby_version}}-event_source-gems-${{ hashFiles('**/Gemfile.lock') }}-${{ hashFiles('**/Gemfile' ) }}
+          key: ${{ runner.os }}-${{matrix.ruby_version}}-event_source-gems-${{ hashFiles('**/event_source.gemspec') }}-${{ hashFiles('**/Gemfile' ) }}
       - name: bundle install
         run: |
           bundle config path vendor/bundle
@@ -51,7 +51,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby_version: ['2.7.5', '3.0.5', '3.1.4', '3.2.2']
+        ruby_version: ['2.7.5', '3.0.5', '3.1.4', '3.2.2', '3.3.8', '3.4.4']
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -68,7 +68,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: vendor/bundle
-          key: ${{ runner.os }}-${{matrix.ruby_version}}-event_source-gems-${{ hashFiles('**/Gemfile.lock') }}-${{ hashFiles('**/Gemfile' ) }}
+          key: ${{ runner.os }}-${{matrix.ruby_version}}-event_source-gems-${{ hashFiles('**/event_source.gemspec') }}-${{ hashFiles('**/Gemfile' ) }}
       - name: bundle install
         run: |
           bundle config path vendor/bundle

Gemfile

@@ -14,4 +14,7 @@ group :development, :test do
   gem 'yard'
   gem 'rubocop-git'
   gem 'aws-sdk-sns'
+  gem 'webmock'
+  gem 'rack'
+  gem 'sinatra', '>= 2', '< 4'
 end