t/Dep.t: add quotes around names

Gbp-Dch: ignore
6 jobs for post-buster in 11 minutes and 34 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #227172
build

00:04:16

 
  Test
passed #227175
autopkgtest

00:06:33

passed #227176
blhc

00:01:22

passed #227174
lintian

00:01:37

passed #227177
piuparts

00:07:16

passed #227173
reprotest

00:04:13