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 8 minutes and 47 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #359668
librem5
build-pureos-gcc-byzantium

00:01:40

 
  Test
passed #359670
librem5
check-po

00:00:19

passed #359669
librem5
test:debian-gcc

00:01:31

23.2%
 
  Package
passed #359671
librem5
package-pureos-byzantium

00:01:45

passed #359672
librem5:arm64
package-pureos-byzantium:arm64

00:05:34

 
  Test Package
passed #359673
librem5
autopkgtest-pureos-byzantium-package

00:01:09

passed #359674
librem5
lintian-pureos-byzantium-package

00:00:42