Fix dependencies in tests/gssapi

Use $(COMMON_DEPS) instead of $(COMMON_DEPLIBS) for dependencies; the
latter appears to be a typo.  Fixes build when using "make -j".

https://github.com/krb5/krb5/commit/055d1ffa81d0730e92aa3f1ed5045cd805c74957
Author: Nickolai Zeldovich <nickolai@csail.mit.edu>
Committer: Greg Hudson <ghudson@mit.edu>
Commit: 055d1ffa81d0730e92aa3f1ed5045cd805c74957
Branch: master
 src/tests/gssapi/Makefile.in |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)