Update dependencies

internal/rational.h needs internal/warnings.h with Apple clang,
for `UNALIGNED_MEMBER_ACCESS`.

common.mk

@@ -3939,6 +3939,7 @@ time.$(OBJEXT): $(top_srcdir)/internal/string.h
 time.$(OBJEXT): $(top_srcdir)/internal/time.h
 time.$(OBJEXT): $(top_srcdir)/internal/variable.h
 time.$(OBJEXT): $(top_srcdir)/internal/vm.h
+time.$(OBJEXT): $(top_srcdir)/internal/warnings.h
 time.$(OBJEXT): {$(VPATH)}assert.h
 time.$(OBJEXT): {$(VPATH)}config.h
 time.$(OBJEXT): {$(VPATH)}constant.h

ext/-test-/rational/depend

@@ -26,6 +26,7 @@ rat.o: $(top_srcdir)/internal/serial.h
 rat.o: $(top_srcdir)/internal/static_assert.h
 rat.o: $(top_srcdir)/internal/stdbool.h
 rat.o: $(top_srcdir)/internal/vm.h
+rat.o: $(top_srcdir)/internal/warnings.h
 rat.o: $(top_srcdir)/ruby_assert.h
 rat.o: rat.c
 # AUTOGENERATED DEPENDENCIES END