CI: drone: --verbose on the failing test

Author: andrewrk

ci/drone/linux_script_test

@@ -30,7 +30,7 @@ case "$1" in
   6)
     ./build/zig build $BUILD_FLAGS test-universal-libc
     ./build/zig build $BUILD_FLAGS test-compare-output
-    ./build/zig build $BUILD_FLAGS test-standalone -Dskip-release-safe
+    ./build/zig build $BUILD_FLAGS test-standalone -Dskip-release-safe --verbose
     ./build/zig build $BUILD_FLAGS test-stack-traces
     ./build/zig build $BUILD_FLAGS test-cli
     ./build/zig build $BUILD_FLAGS test-asm-link