Use . instead of source (#480)

Co-authored-by: Andrei Kazakou <andrei.k@geomotiv.com>

Author: typicode

src/installer/__tests__/__snapshots__/getScript.ts.snap

@@ -33,7 +33,7 @@ if [ -f \\"$scriptPath\\" ]; then
   # fi
   if [ -f ~/.huskyrc ]; then
     debug \\"source ~/.huskyrc\\"
-    source ~/.huskyrc
+    . ~/.huskyrc
   fi
   node_modules/run-node/run-node \\"$scriptPath\\" $hookName \\"$gitParams\\"
 else
@@ -72,7 +72,7 @@ if [ -f \\"$scriptPath\\" ]; then
   # fi
   if [ -f ~/.huskyrc ]; then
     debug \\"source ~/.huskyrc\\"
-    source ~/.huskyrc
+    . ~/.huskyrc
   fi
   node \\"$scriptPath\\" $hookName \\"$gitParams\\"
 else

src/installer/getScript.ts

@@ -66,7 +66,7 @@ if [ -f "$scriptPath" ]; then
   # fi
   if [ -f ${huskyrc} ]; then
     debug "source ${huskyrc}"
-    source ${huskyrc}
+    . ${huskyrc}
   fi
   ${node} "$scriptPath" $hookName "$gitParams"
 else