flatpak: Use also tracker-miners 2.3.2

tracker-miners master requires tracker-testutils 2.0, but they are not
provided by tracker 2.3.2 and tracker master provides just version 3.0.
Let's use tracker-miners 2.3.2 to workaround this issue.

build-aux/flatpak/org.gnome.Nautilus.json

@@ -123,8 +123,9 @@
       ],
       "sources": [
         {
-          "type": "git",
-          "url": "https://gitlab.gnome.org/GNOME/tracker-miners.git"
+          "type": "archive",
+          "url": "https://download.gnome.org/sources/tracker-miners/2.3/tracker-miners-2.3.2.tar.xz",
+          "sha256": "069e23c2a2de58bfc84d9d798bd091ce78419903fb4dcf099fb2ad97f8563fce"
         }
       ]
     },

build-aux/flatpak/org.gnome.Nautilus.yml

@@ -95,8 +95,9 @@ modules:
   - "-Dsystemd_user_services=no"
   - "-Dwriteback=false"
   sources:
-  - type: git
-    url: https://gitlab.gnome.org/GNOME/tracker-miners.git
+  - type: archive
+    url: https://download.gnome.org/sources/tracker-miners/2.3/tracker-miners-2.3.2.tar.xz
+    sha256: 069e23c2a2de58bfc84d9d798bd091ce78419903fb4dcf099fb2ad97f8563fce
 - name: gnome-desktop
   buildsystem: meson
   config-opts:

build-aux/flatpak/org.gnome.NautilusMaster.yml

@@ -94,8 +94,9 @@ modules:
   - "-Dsystemd_user_services=no"
   - "-Dwriteback=false"
   sources:
-  - type: git
-    url: https://gitlab.gnome.org/GNOME/tracker-miners.git
+  - type: archive
+    url: https://download.gnome.org/sources/tracker-miners/2.3/tracker-miners-2.3.2.tar.xz
+    sha256: 069e23c2a2de58bfc84d9d798bd091ce78419903fb4dcf099fb2ad97f8563fce
 - name: gnome-desktop
   buildsystem: meson
   config-opts: