update: 一応ubuntuバージョンをそろえた

Author: takuchi17

.github/workflows/build-check.yaml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
         uses: actions/checkout@v3

.github/workflows/format-check.yaml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   format-check:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Checkout code

.github/workflows/test.yaml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
         uses: actions/checkout@v3