Update Ruby version to 3.1.4 in RuboCop and CI config

Author: oleander

.github/workflows/main.yml

@@ -1,6 +1,6 @@
 name: git-fame
 
-on: [push]
+on: [push, pull_request]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -22,7 +22,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           bundler-cache: true
-          ruby-version: 3.3.0
+          ruby-version: 3.1.4
 
       - name: Run Rubocop
         run: bundle exec rubocop
@@ -116,8 +116,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           bundler-cache: true
-          ruby-version: 3.3.0
-
+          ruby-version: 3.3.6
       - name: Setup git
         run: |
           git config --global user.email "actions@github.com"

.rubocop.yml

@@ -5,7 +5,7 @@ require:
   - rubocop-md
 
 AllCops:
-  TargetRubyVersion: 3.3
+  TargetRubyVersion: 3.1
   NewCops: enable
   Exclude: ['vendor/**/*']