Refactor gem-publish workflow permissions and update gemspec email and license details

Author: addersuk

.github/workflows/gem-publish.yml

@@ -4,14 +4,14 @@ on:
   push:
     branches: [ master ]
 
-permissions:
-  contents: write
-  id-token: write # Required for OIDC token
-
 jobs:
   test:
     name: Run Tests
     runs-on: ubuntu-latest
+    
+    permissions:
+      contents: read
+
     strategy:
       matrix:
         ruby-version: [3.1, 3.2, 3.3, 3.4]
@@ -28,13 +28,18 @@ jobs:
   build:
     name: Build and Publish
     runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+      id-token: write # Required for OIDC token
+
     needs: test
     steps:
       - uses: actions/checkout@v5
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ruby
+          ruby-version: .ruby-version
           bundler-cache: true
       - uses: rubygems/release-gem@v1
       - name: Get Gem Version

twiglet.gemspec

@@ -8,7 +8,7 @@ Gem::Specification.new do |gem|
   gem.name                  = 'twiglet'
   gem.version               = Twiglet::VERSION
   gem.authors               = ['Simply Business']
-  gem.email                 = ['tech@simplybusiness.co.uk']
+  gem.email                 = ['opensourcetech+rubygems@simplybusiness.co.uk']
   gem.homepage              = 'https://github.com/simplybusiness/twiglet-ruby'
 
   gem.summary               = 'Twiglet'
@@ -27,7 +27,7 @@ Gem::Specification.new do |gem|
   gem.require_paths         = ['lib']
   gem.required_ruby_version = ['>= 3.1 ', '< 3.5']
 
-  gem.license               = 'Copyright SimplyBusiness'
+  gem.license               = 'MIT'
 
   gem.add_dependency 'json-schema'
   gem.add_development_dependency 'minitest'