fix failed ci build

Author: syhwawa

.github/workflows/build_pipeline.yml

@@ -6,11 +6,11 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v1
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
-        python-version: 3.7
-    - uses: actions/cache@v1
+        python-version: 3.8
+    - uses: actions/cache@v4
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}