Updated GitHub Actions runner (#671)

`ubuntu-20.04` is no longer available.

Author: freemanjp

.github/workflows/maven-build.yml

@@ -35,7 +35,7 @@ env:
 jobs:
   build:
     name: Maven build
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         maven-version:

.github/workflows/maven-deploy.yml

@@ -34,7 +34,7 @@ env:
 jobs:
   deploy:
     name: Maven deploy
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     if: github.repository == 'gantsign/ktlint-maven-plugin'
     steps:
       - name: Checkout

.github/workflows/release.yml

@@ -46,7 +46,7 @@ jobs:
 
   deploy-site:
     name: Maven deploy site
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     if: github.repository == 'gantsign/ktlint-maven-plugin'
     needs: deploy
     steps:

.github/workflows/verify.yml

@@ -36,7 +36,7 @@ jobs:
   build-all:
     if: ${{ always() }}
     name: Build (matrix)
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     needs: build
     steps:
       - name: Check build matrix status