CI Tweaks (backport #18738) (#18742)

* ci: fix typo

(cherry picked from commit 96a7cedaca)

* ci: suppress cargo tree output

(cherry picked from commit 59cd0556ef)

Co-authored-by: Trent Nelson <trent@solana.com>

ci/test-checks.sh

@@ -14,7 +14,7 @@ scripts/increment-cargo-version.sh check
 
 # Disallow uncommitted Cargo.lock changes
 (
-  _ scripts/cargo-for-all-lock-files.sh tree
+  _ scripts/cargo-for-all-lock-files.sh tree >/dev/null
   set +e
   if ! _ git diff --exit-code; then
     echo -e "\nError: Uncommitted Cargo.lock changes" 1>&2