Update to ubuntu-24.04 (#1018)

Author: SamWilsn

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
   save-pr:
     name: Save PR Number
     runs-on: ubuntu-latest
-    
+
     steps:
       - name: Save PR number
         env:
@@ -38,7 +38,7 @@ jobs:
 
   htmlproofer:
     name: HTMLProofer
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
 
     steps:
       - name: Checkout EIPs
@@ -65,7 +65,7 @@ jobs:
           cd $GITHUB_WORKSPACE
           rm -rf ERCs
       - name: Setup Ruby
-        uses: ruby/setup-ruby@f26937343756480a8cb3ae1f623b9c8d89ed6984 # v1.196.0
+        uses: ruby/setup-ruby@fb404b9557c186e349162b0d8efb06e2bc36edea # v1.232.0
         with:
           ruby-version: '3.1' # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
@@ -74,7 +74,7 @@ jobs:
         run: bundle exec jekyll build
         env:
           JEKYLL_ENV: production
-          
+
       - name: Build Website
         run: |
           bundle exec jekyll doctor
@@ -88,11 +88,11 @@ jobs:
   link-check:
     name: Link Check
     runs-on: ubuntu-latest
-    
+
     steps:
       - name: Checkout EIP Repository
         uses: actions/checkout@47fbe2df0ad0e27efb67a70beac3555f192b062f
-        
+
       - name: Link Checker
         uses: gaurav-nelson/github-action-markdown-link-check@d53a906aa6b22b8979d33bc86170567e619495ec
         with: