github: move pip installations upwards.

python ssl has some conflict with installed packages. Installing pip
stuff before other packages fixes it.

Bug: 16478
Change-Id: Iba5a5eceb5e27a435544aa65e0fad683f798f3f3
Reviewed-on: https://code.wireshark.org/review/36669
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
Reviewed-by: Dario Lombardo <lomato@gmail.com>

.github/workflows/macos.yml

@@ -13,14 +13,16 @@ jobs:
         uses: actions/setup-python@v1
         with:
           python-version: 3.8
+      - name: Install dmgbuild
+        run: pip3 install dmgbuild
+      - name: Install pytest
+        run: pip install pytest pytest-xdist
       - name: Set up Ruby 2.6
         uses: actions/setup-ruby@v1.1.1
         with:
           ruby-version: '2.6'
       - name: Install deps
         run: ./tools/macos-setup-brew.sh
-      - name: Install dmgbuild
-        run: pip3 install dmgbuild
       - name: Install asciidoctor
         run: gem install asciidoctor
       - name: Mkdir
@@ -34,8 +36,6 @@ jobs:
       - name: Build test-programs
         run: ninja test-programs
         working-directory: build
-      - name: Install pytest
-        run: pip install pytest pytest-xdist
       - name: Run tests
         env:
           PYTEST_ADDOPTS: --skip-missing-programs=rawshark