Also removed deprecated ubuntu-18.04

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-18.04, ubuntu-20.04, ubuntu-22.04, macos-11, macos-12, windows-2019, windows-2022 ]
+        os: [ ubuntu-20.04, ubuntu-22.04, macos-11, macos-12, windows-2019, windows-2022 ]
         ruby: [
           '1.9', '2.0', '2.1', '2.2', '2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', ruby-head,
           jruby, jruby-head,

README.md

@@ -42,7 +42,7 @@ The action works on these [GitHub-hosted runners](https://docs.github.com/en/act
 
 | Operating System | Supported |
 | ---------------- | --------- |
-| Ubuntu  | `ubuntu-18.04`, `ubuntu-20.04`, `ubuntu-22.04` |
+| Ubuntu  | `ubuntu-20.04`, `ubuntu-22.04` |
 | macOS   | `macos-11`, `macos-12` |
 | Windows | `windows-2019`, `windows-2022` |
 

common.js

@@ -160,7 +160,6 @@ function getImageOS() {
 }
 
 export const supportedPlatforms = [
-  'ubuntu-18.04',
   'ubuntu-20.04',
   'ubuntu-22.04',
   'macos-11',

dist/index.js

@@ -468,7 +468,6 @@ function getImageOS() {
 }
 
 const supportedPlatforms = [
-  'ubuntu-18.04',
   'ubuntu-20.04',
   'ubuntu-22.04',
   'macos-11',