Install various autoconf dependencies

Author: aidangarske

.github/workflows/stunnel.yml

@@ -98,10 +98,10 @@ jobs:
           key: wolfprov-${{ matrix.wolfssl_ref }}-${{ github.sha }}
           fail-on-cache-miss: true
 
-      - name: Install stunnel dependencies
+      - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y libwrap0-dev
+          sudo apt-get install -y libwrap0-dev autoconf automake libtool pkg-config
 
       - name: Build stunnel
         uses: wolfSSL/actions-build-autotools-project@v1