[build] Build Windows x86 version with py3.7

and remove redundant tests
Closes #390

:ci skip

Co-authored by: pukkandan, shirt-dev

.github/workflows/build.yml

@@ -95,7 +95,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python
+    # 3.8 is used for Win7 support
+    - name: Set up Python 3.8
       uses: actions/setup-python@v2
       with:
           python-version: '3.8'
@@ -137,15 +138,16 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.4.4 32-Bit
+    # 3.7 is used for Vista support. See https://github.com/yt-dlp/yt-dlp/issues/390
+    - name: Set up Python 3.7 32-Bit
       uses: actions/setup-python@v2
       with:
-          python-version: '3.4.4'
+          python-version: '3.7'
           architecture: 'x86'
     - name: Upgrade pip and enable wheel support
-      run: python -m pip install pip==19.1.1 setuptools==43.0.0 wheel==0.33.6
-    - name: Install Requirements for 32 Bit
-      run: pip install pyinstaller==3.5 mutagen==1.42.0 pycryptodome==3.9.4 pefile==2019.4.18
+      run: python -m pip install --upgrade pip setuptools wheel
+    - name: Install Requirements
+      run: pip install pyinstaller mutagen pycryptodome
     - name: Bump version
       id: bump_version
       run: python devscripts/update-version.py

.github/workflows/core.yml

@@ -9,11 +9,13 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-18.04]
-        python-version: [3.6, 3.7, 3.8, 3.9, pypy-3.6, pypy-3.7]
+        # py3.9 is in quick-test
+        python-version: [3.7, 3.8, pypy-3.6, pypy-3.7]
         run-tests-ext: [sh]
         include:
+        # atleast one of the tests must be in windows
         - os: windows-latest
-          python-version: 3.4  # Windows x86 build is still in 3.4
+          python-version: 3.6
           run-tests-ext: bat
     steps:
     - uses: actions/checkout@v2

.github/workflows/download.yml

@@ -9,11 +9,11 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-18.04]
-        python-version: [3.6, 3.7, 3.8, 3.9, pypy-3.6, pypy-3.7]
+        python-version: [3.7, 3.8, 3.9, pypy-3.6, pypy-3.7]
         run-tests-ext: [sh]
         include:
         - os: windows-latest
-          python-version: 3.4  # Windows x86 build is still in 3.4
+          python-version: 3.6
           run-tests-ext: bat
     steps:
     - uses: actions/checkout@v2