upgrade setuptools befor using PyInstaller

.github/workflows/release.yml

@@ -10,7 +10,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        # os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, ]
         python-version: [3.8, ]
 
     steps:
@@ -21,9 +22,9 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies and pyinstall
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip setuptools
         pip install -r requirements.txt
-        pip install PyInstaller
+        pip install PyInstaller==3.6
     - name: Build binary
       run: |
         pyinstaller nanovna-saver.py