mozart: pin boost to boost183 (#440643)

pkgs/development/compilers/mozart/default.nix

···
   cmake,
   unzip,
   makeWrapper,
-  boost,
+  boost183,
   llvmPackages,
   gmp,
   emacs,
···
   '';
 
   buildInputs = [
-    boost
+    boost183
     gmp
     emacs
     jre_headless