Update aur/show-aur-changes

Co-authored-by: Claudia Pellegrino <claui@users.noreply.github.com>

Author: christian-heusel

aur/show-aur-changes

@@ -138,7 +138,7 @@ for pkg in "${PKGS[@]}"; do
       # https://stackoverflow.com/a/9766506
       base="$(git -C "$REPO_ROOT" mktree < /dev/null)"
     fi
-    diff_output=$(git -C "$REPO_ROOT" diff "$base" "$newest" -- "$PATTERN")
+    diff_output=$(git -C "$REPO_ROOT" format-patch --no-binary --stdout "$base".."$newest" -- "$PATTERN")
   fi
 
   # Match against grep pattern if specified