chore: update actions cache version

.github/workflows/docs.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache Poetry
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.poetry
           key: ${{ runner.os }}-poetry-${{ hashFiles('**/poetry.lock') }}

.github/workflows/lint.yml

@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Cache Poetry
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.poetry
           key: ${{ runner.os }}-poetry-${{ hashFiles('**/poetry.lock') }}

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Cache Poetry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.poetry
           key: ${{ runner.os }}-poetry-${{ hashFiles('**/poetry.lock') }}