disable release mode test in zig-mach nightly run

.gitea/workflows/zig-mach.yaml

@@ -37,8 +37,9 @@ jobs:
         run: zig build smoke-test --verbose
       - name: Run full tests
         run: zig build test --verbose --summary all
-      - name: Run tests (release mode)
-        run: zig build test -Doptimize=ReleaseSafe --verbose
+      # TODO: Zig mach currently tracking behind zig 0.14.0 branch - enable this test after update
+      # - name: Run tests (release mode)
+      #   run: zig build test -Doptimize=ReleaseSafe --verbose
       # Zig package manager expects everything to be inside a directory in the archive,
       # which it then strips out on download. So we need to shove everything inside a directory
       # the way GitHub/Gitea does for repo archives