Revert "Update GitHub Actions to the latest versions (#356)"

This reverts commit 9bdef0d.

Author: jungshadow

.github/workflows/pull_request.yml

@@ -11,12 +11,11 @@ jobs:
     runs-on: ubuntu-latest
     steps: 
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v2
       - name: Set up Python ${{ env.PYTHON_VERSION }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v1
         with:
           python-version: ${{ env.PYTHON_VERSION }}
-          cache: 'pipenv'
       - name: Install pipenv
         run: pip install pipenv
       - name: Change Directory

.github/workflows/release.yml

@@ -14,12 +14,11 @@ jobs:
     runs-on: ubuntu-latest
     steps: 
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v2
       - name: Set up Python ${{ env.PYTHON_VERSION }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v1
         with:
           python-version: ${{ env.PYTHON_VERSION }}
-          cache: 'pipenv'
       - name: Install pipenv
         run: pip install pipenv
       - name: Change Directory
@@ -31,11 +30,10 @@ jobs:
       - name: Zip Sample Data
         run: make release-zip-sample-data
       - name: Publish Sample Data
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v2
         with:
           name: sample-data
           path: sample-data.zip
-          overwrite: true
       - name: Sync Labels
         env:
           GITHUB_ACCESS_TOKEN: ${{ secrets.LABEL_TOKEN }}