test_cmake_out_of_source: run an ssl-opt test case that exists

component_test_cmake_out_of_source was running the ssl-opt.sh test case
"Fallback SCSV: beginning of list", but this test case was removed in Mbed
TLS 3.0, so ssl-opt.sh was running nothing, which is not an effective test.
In 2.x, the test case was chosen because it uses an additional auxiliary
program tests/scripts/tcp_client.pl. This auxiliary program is no longer
used. So instead, run at least one test case that's sure to exist.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index ac0b2e0..745fad3 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -2876,12 +2876,12 @@
 
     msg "test: cmake 'out-of-source' build"
     make test
-    # Test an SSL option that requires an auxiliary script in test/scripts/.
+    # Check that ssl-opt.sh can find the test programs.
     # Also ensure that there are no error messages such as
     # "No such file or directory", which would indicate that some required
     # file is missing (ssl-opt.sh tolerates the absence of some files so
     # may exit with status 0 but emit errors).
-    ./tests/ssl-opt.sh -f 'Fallback SCSV: beginning of list' >ssl-opt.out 2>ssl-opt.err
+    ./tests/ssl-opt.sh -f 'Default' >ssl-opt.out 2>ssl-opt.err
     grep PASS ssl-opt.out
     cat ssl-opt.err >&2
     # If ssl-opt.err is non-empty, record an error and keep going.