Remove deprecated github action command (#1834)

Author: CubikingChill

.github/workflows/basic_test.yaml

@@ -1,4 +1,5 @@
 # Copyright (c) 2021-2022 Chris Reed
+# Copyright (c) 2025 Antonio Chiu
 
 # pyocd workflow for:
 # - checking code with flake8
@@ -50,7 +51,7 @@ jobs:
     - name: Get pip cache dir
       id: pip-cache
       run: |
-        echo "::set-output name=dir::$(pip cache dir)"
+        echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
     - name: Setup pip cache
       uses: actions/cache@v3