.github: Update macOS workflow

Author: corona10

.github/workflows/build.yml

@@ -159,10 +159,10 @@ jobs:
     - uses: actions/checkout@v3
     - name: Prepare homebrew environment variables
       run: |
-        echo "LDFLAGS=-L$(brew --prefix tcl-tk)/lib" >> $GITHUB_ENV
-        echo "PKG_CONFIG_PATH=$(brew --prefix openssl@1.1)/lib/pkgconfig:$(brew --prefix tcl-tk)/lib/pkgconfig" >> $GITHUB_ENV
+        brew install pkg-config
+        echo "PKG_CONFIG_PATH=$(brew --prefix tcl-tk)/lib/pkgconfig" >> $GITHUB_ENV
     - name: Configure CPython
-      run: ./configure --with-pydebug --prefix=/opt/python-dev
+      run: ./configure --with-pydebug --prefix=/opt/python-dev --with-openssl=$(brew --prefix openssl)
     - name: Build CPython
       run: make -j4
     - name: Display build info