ci.sh: Update to latest release branch

release/22.x is the latest release branch.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>

Author: nathanchance

ci.sh

@@ -104,7 +104,7 @@ function do_llvm() {
         --install-target distribution \
         --projects clang lld \
         --quiet-cmake \
-        --ref release/20.x \
+        --ref release/22.x \
         --shallow-clone \
         --show-build-commands \
         --targets X86 \