build: minor whitespace fix in test/meson.build
build: minor whitespace fix in test/meson.build

Signed-off-by: Patrick Williams <cbb7353e6d953ef360baf960c122346276c6e320@stwcx.xyz>
Change-Id: I4bdd98f74f09a8b2194e8c87878947484b3bdb42

openbmc/sdbusplus,openbmc/sdbusplus,openbmc/sdbusplus,openbmc/sdbusplus