secret-store: Work around bug in gnome-keyring preventing keyring unlocking

When a keyring is cold (unlocked) the schema is set as
"org.freedesktop.Secret.Generic". If we require the name to strictly match
while searching we won't ever get a match.

See https://gitlab.gnome.org/GNOME/gnome-keyring/-/issues/89 and
https://gitlab.gnome.org/GNOME/libsecret/-/issues/7 for more information.

Closes #512
7 jobs for fix-secret-store in 9 minutes and 46 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #359586
librem5
build-pureos-gcc-byzantium

00:02:06

 
  Test
passed #359588
librem5
check-po

00:00:21

passed #359587
librem5
test:debian-gcc

00:01:52

23.2%
 
  Package
passed #359589
librem5
package-pureos-byzantium

00:02:18

passed #359590
librem5:arm64
package-pureos-byzantium:arm64

00:05:48

 
  Test Package
passed #359591
librem5
autopkgtest-pureos-byzantium-package

00:01:19

passed #359592
librem5
lintian-pureos-byzantium-package

00:00:48