Add missing pg_basebackup TAP test for meson.

011_in_place_tablespace was missing from the list of pg_basebackup
tests to run under meson, so add it.

Oversight in 363e8f9.

Discussion: https://postgr.es/m/CAD21AoDTh1A8bvNBF3LQNQg=27xTpSgvpT+4_yyEj6p4Zv8unA@mail.gmail.com

Author: MasahikoSawada

src/bin/pg_basebackup/meson.build

@@ -86,6 +86,7 @@ tests += {
     },
     'tests': [
       't/010_pg_basebackup.pl',
+      't/011_in_place_tablespace.pl',
       't/020_pg_receivewal.pl',
       't/030_pg_recvlogical.pl',
     ],