fix #266: change to ubuntu20.04 for wkhtmltopdf-binary

.github/workflows/brakeman.yml

@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   brakeman:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v2

.github/workflows/danger.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   danger:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v3

.github/workflows/docker-push-image.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   push_to_registry:
     name: Push Docker image to Docker Hub
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - name: Check out the repo
         uses: actions/checkout@v2

.github/workflows/eslint.yml

@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   eslint:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v2

.github/workflows/mysql.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   mysql:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     env:
       DB_ADAPTER: mysql2

.github/workflows/postgres.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   postgresql:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     services:
       # Postgres installation

.github/workflows/rubocop.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   rubocop:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v3

.github/workflows/ruby.yml

@@ -15,7 +15,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     env:
       DB_ADAPTER: mysql2