Update GNOME libreoffice impress start needle for new LO

We do this slightly differently on KDE and GNOME for whatever
reason, so this needle needs updating too.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

needles/gnome/apps/apps_run_limpress_start-20210827.json

@@ -0,0 +1,16 @@
+{
+  "area": [
+    {
+      "xpos": 746,
+      "height": 19,
+      "width": 49,
+      "type": "match",
+      "ypos": 589
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "apps_run_limpress_start",
+    "libreoffice_any"
+  ]
+}