[libc++] [test] Add missing FILE_DEPENDENCIES to align.pass.sh.cpp

Differential Revision: https://reviews.llvm.org/D77541

Author: broadwaylamb

libcxx/test/libcxx/atomics/atomics.align/align.pass.sh.cpp

@@ -8,6 +8,7 @@
 //
 // UNSUPPORTED: libcpp-has-no-threads, c++98, c++03
 // REQUIRES: libatomic
+// FILE_DEPENDENCIES: %t.exe
 // RUN: %{build} -latomic
 // RUN: %{run}
 //