Merge pull request #2983 from myk002/myk_ubuuuuuntu

update all build envs to ubuntu-22.04

.github/workflows/build.yml

@@ -10,10 +10,9 @@ jobs:
       fail-fast: false
       matrix:
         os:
-        - ubuntu-18.04
+        - ubuntu-22.04
         gcc:
-        - 4.8
-        - 7
+        - 10
         plugins:
         - default
         include:
@@ -159,7 +158,7 @@ jobs:
           path: build/win64-cross/output/*
 
   docs:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     steps:
     - name: Set up Python 3
       uses: actions/setup-python@v2
@@ -182,14 +181,14 @@ jobs:
         path: docs/html
 
   lint:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     steps:
     - name: Set up Python 3
       uses: actions/setup-python@v2
       with:
         python-version: 3
     - name: Set up Ruby 2.7
-      uses: actions/setup-ruby@v1
+      uses: ruby/setup-ruby@v1
       with:
         ruby-version: 2.7
     - name: Install Lua