build: pass -fPIC to linker as well for shared builds

PR-URL: https://github.com/nodejs/node/pull/58070
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>

common.gypi

@@ -568,6 +568,7 @@
           }],
           [ 'node_shared=="true"', {
             'cflags': [ '-fPIC' ],
+            'ldflags': [ '-fPIC' ],
           }],
         ],
       }],