build: add texinfo to macOS build dependencies

Author: frangarcj

.github/workflows/build.yml

@@ -64,7 +64,7 @@ jobs:
       run: |
         git config --global user.email "builds@travis-ci.com"
         git config --global user.name "Travis CI"
-        brew install autoconf automake libtool
+        brew install autoconf automake libtool texinfo
         mkdir build
         cd build
         cmake ..