Bump retry count on some flaky tests

The silverblue tests are flaky because of
https://github.com/fedora-silverblue/issue-tracker/issues/548 .
The desktop_upgrade_encrypted test is flaky on Rawhide (so, when
booting from F40 initially) since we switched to UEFI, not sure
if it's because of UEFI somehow or just a timing coincidence.
Am going to look into it, but for now this should save lots of
manual restarting.

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

templates-updates.fif.json

@@ -130,7 +130,7 @@
                 "HDDSIZEGB": "15",
                 "NUMDISKS": "2",
                 "PACKAGE_SET": "default",
-                "RETRY": "1",
+                "RETRY": "2",
                 "SUBVARIANT": "Silverblue"
             },
             "version": "*"

templates.fif.json

@@ -311,6 +311,7 @@
                 "DESKTOP": "gnome",
                 "HDDSIZEGB": "20",
                 "PACKAGE_SET": "default",
+                "RETRY": "2",
                 "TEST_TARGET": "ISO"
             },
             "version": "*"
@@ -3066,6 +3067,7 @@
                 "DESKTOP": "gnome",
                 "ENCRYPT_PASSWORD": "weakpassword",
                 "HDD_1": "disk_f%UP1REL%_desktopencrypt_2_%ARCH%.qcow2",
+                "RETRY": "2",
                 "ROOT_PASSWORD": "weakpassword",
                 "TEST_TARGET": "COMPOSE",
                 "UPGRADE": "1",