build.sh: freeze edk2 to fix PXE 4K UEFI tests

FCOS PXE 4K UEFI tests started to fail after edk2-ovmf updated to
20240524-1.fc40. Freeze on the previous version temporarily.

See also: #3815

Co-authored-by: Jonathan Lebon <jonathan@jlebon.com>

build.sh

@@ -43,6 +43,13 @@ install_rpms() {
 
     frozendeps=""
 
+    # freeze edk2 for https://github.com/coreos/coreos-assembler/issues/3815
+    case "${arch}" in
+      x86_64|aarch64) frozendeps=$(echo edk2-{ovmf,aarch64}-20240214-7.fc40);;
+      *) ;;
+    esac
+
+
     # First, a general update; this is best practice.  We also hit an issue recently
     # where qemu implicitly depended on an updated libusbx but didn't have a versioned
     # requires https://bugzilla.redhat.com/show_bug.cgi?id=1625641