ci: enable std lib tests for freebsd

ci/srht/freebsd_script

@@ -28,11 +28,7 @@ make $JOBS install
 
 release/bin/zig build test-fmt
 release/bin/zig build test-behavior
-
-# This test is disabled because it triggers "out of memory" on the sr.ht CI service.
-# See https://github.com/ziglang/zig/issues/3210
-# release/bin/zig build test-std
-
+release/bin/zig build test-std
 release/bin/zig build test-compiler-rt
 release/bin/zig build test-compare-output
 release/bin/zig build test-standalone