style: don't show location of build directory in a dry-run

It wouldn't have been created...

Author: dannyadair

src/pdfbaker/baker.py

@@ -115,7 +115,8 @@ def bake(self, document_names: tuple[str, ...] | None = None) -> None:
                     )
 
         if self.config.keep_build:
-            self.log_info("Build files kept in: %s", self.config.directories.build)
+            if not self.config.dry_run:
+                self.log_info("Build files kept in: %s", self.config.directories.build)
         else:
             self.teardown()