Upgrade GitHub cache version

Author: takuseno

.github/workflows/format_check.yml

@@ -12,10 +12,10 @@ jobs:
         with:
           python-version: 3.9.x
       - name: Cache pip
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
+          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}-${{ hashFiles('dev.requirements.txt') }}
           restore-keys: |
             ${{ runner.os }}-pip-
             ${{ runner.os }}-

.github/workflows/test.yml

@@ -17,10 +17,10 @@ jobs:
         with:
           python-version: '3.10'
       - name: Cache pip
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
+          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}-${{ hashFiles('dev.requirements.txt') }}
           restore-keys: |
             ${{ runner.os }}-pip-
             ${{ runner.os }}-