[Issue] tripwire's `deepStrictEqual` has stricter instance checking than Node's assert

[nev21]

Details:

• Node's assert.deepStrictEqual passes when comparing structurally identical objects created via objAssign({}, ...)
• Tripwire's assert.deepStrictEqual fails on the same comparisons, requiring exact instance identity
• This affects tests for functions like deepMerge and mergeOptions that return new object instances

Example:

// This passes with Node's assert but fails with tripwire
const result = objAssign({}, { a: 1 });
assert.deepStrictEqual(result, { a: 1 }); // Fails: different instances

Workaround: Use deepEqual instead of deepStrictEqual for new object instances.