fix(action): remove setup-python pip cache to fix cross-repo path error

setup-python cache-dependency-path only matches files within the
caller's workspace, so it cannot reference the action's own
requirements.txt. Remove cache/cache-dependency-path entirely.
pip install in the next step handles dependencies directly.

Author: pphatdev

action.yml

@@ -38,28 +38,21 @@ outputs:
 runs:
   using: "composite"
   steps:
-    - name: Resolve action absolute path
-      id: action-path
-      shell: bash
-      run: echo "abs=$(cd '${{ github.action_path }}' && pwd)" >> "$GITHUB_OUTPUT"
-
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
         python-version: ${{ inputs.python-version }}
-        cache: "pip"
-        cache-dependency-path: "${{ steps.action-path.outputs.abs }}/requirements.txt"
 
     - name: Install dependencies
       shell: bash
       run: |
         python -m pip install --upgrade pip
-        pip install -r ${{ steps.action-path.outputs.abs }}/requirements.txt
+        pip install -r ${{ github.action_path }}/requirements.txt
 
     - name: Create runtime .env for script
       shell: bash
       run: |
-        cp ${{ steps.action-path.outputs.abs }}/.env.example .env
+        cp ${{ github.action_path }}/.env.example .env
         printf "\nWAKA_API=%s\n" "${{ inputs.waka-api }}" >> .env
         printf "WAKA_TOKEN=%s\n" "${{ inputs.waka-token }}" >> .env
         printf "BAR_STYLE=%s\n" "${{ inputs.bar-style }}" >> .env