[libsecret] ci: Use the proper Meson b_sanitize option

[Niels De Graef <nielsdg src gnome org>]

commit e1e53430332eecd4c3f526c12aa3d1e361beb034
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Fri May 27 11:28:08 2022 +0200

    ci: Use the proper Meson b_sanitize option
    
    No idea how `meson -Dsanitize` ever would've worked

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1f55800..f0e9887 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -35,7 +35,7 @@ fedora:asan:
     - dnf install -y $DEPENDENCIES libasan
     - dbus-uuidgen --ensure
   script:
-    - meson _build -Dsanitize=address -Dgtk_doc=false
+    - meson _build -Db_sanitize=address -Dgtk_doc=false
     - meson compile -C _build
     - eval `dbus-launch --sh-syntax`
     - meson test -C _build
@@ -54,7 +54,7 @@ fedora:ubsan:
     - dnf install -y $DEPENDENCIES libubsan
     - dbus-uuidgen --ensure
   script:
-    - meson _build -Dsanitize=undefined -Dgtk_doc=false
+    - meson _build -Db_sanitize=undefined -Dgtk_doc=false
     - meson compile -C _build
     - eval `dbus-launch --sh-syntax`
     - meson test -C _build