Merge pull request doctrine#307 from jrfnl/feature/ghactions-update-ubuntu

GH Actions: update ubuntu images used

Author: greg0ire

.github/workflows/continuous-integration.yml

@@ -14,7 +14,7 @@ jobs:
   coding-standards:
     name: "Coding Standards"
 
-    runs-on: "ubuntu-18.04"
+    runs-on: "ubuntu-22.04"
 
     strategy:
       matrix:
@@ -47,7 +47,7 @@ jobs:
   validate-against-schema:
     name: "Validate against schema"
 
-    runs-on: "ubuntu-18.04"
+    runs-on: "ubuntu-22.04"
 
     strategy:
       matrix:
@@ -85,7 +85,7 @@ jobs:
   test-report:
     name: "Test report"
 
-    runs-on: "ubuntu-18.04"
+    runs-on: "ubuntu-22.04"
 
     strategy:
       fail-fast: false
@@ -123,7 +123,7 @@ jobs:
   test-fixes:
     name: "Test fixes"
 
-    runs-on: "ubuntu-18.04"
+    runs-on: "ubuntu-22.04"
 
     strategy:
       fail-fast: false