Fixed brew link step for pkgconf

Author: filipecosta90

.github/workflows/ci.yml

@@ -109,7 +109,9 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies
-      run: brew install autoconf automake libtool libevent pkg-config openssl@${{ matrix.openssl }}
+      run:  |
+        brew install autoconf automake libtool libevent pkg-config openssl@${{ matrix.openssl }}
+        brew link --overwrite pkgconf
     - name: Build
       run: autoreconf -ivf && PKG_CONFIG_PATH=`brew --prefix openssl@${{ matrix.openssl }}`/lib/pkgconfig ./configure && make
 
@@ -121,7 +123,9 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies
-      run: brew install autoconf automake libtool libevent pkg-config
+      run:  |
+        brew install autoconf automake libtool libevent pkg-config
+        brew link --overwrite pkgconf
     - name: Install openssl v1.0.2
       run: brew install rbenv/tap/[email protected]
     - name: Build