Fix build

.github/workflows/build.yml

@@ -17,8 +17,9 @@ jobs:
           architecture: 'x64'
       - name: Install requirements
         run: |
+          pip install --upgrade pip
           pip install -r requirements.txt
-          pip install -r PyInstaller
+          pip install PyInstaller
       - name: Run PyInstaller
         run: |
           python -m PyInstaller epson_print_conf.spec -- --default