Bump zwasm v1.6.1 → v1.7.2

Picks up:
- ARM64 JIT remainder fix (rd == rs2 aliasing). Surfaced here via
  02_tinygo_test: TinyGo's gcd lowered to IR `r3 = r0 % r3` produced
  wrong remainders after HOT_THRESHOLD JIT compilation, causing the
  loop to spin for minutes.
- Preserve caller-set vm.* settings across invoke() (v1.7.1).
- -Dpic / -Dcompiler-rt build options (v1.7.1).
- Spec testsuite bumped to f9c743a (v1.7.1).
- v1.7.0 contents (SIMD JIT, memory64 fix, FD-based WASI config,
  JIT correctness sweep) previously inaccessible due to the rem bug.

Commit Gate (Mac):
- run_all.sh: zig test, ReleaseSafe build, cljw test (83 ns),
  e2e wasm, deps.edn e2e — all PASS
- Binary 4.76 MB (≤ 5 MB), startup 4.5 ms (≤ 6 ms), RSS 7.65 MB (≤ 10 MB)
- wasm_bench.sh --quick: gcd 66.2 ms (was hanging on v1.7.0/v1.7.1)

Author: chaploud

build.zig.zon

@@ -3,8 +3,8 @@
     .version = "0.3.0",
     .dependencies = .{
         .zwasm = .{
-            .url = "https://github.com/clojurewasm/zwasm/archive/v1.6.1.tar.gz",
-            .hash = "zwasm-1.6.0-IBbzFxlNJABErVzYJGZtcE4EzBw26P4XziZAj8CywE4M",
+            .url = "https://github.com/clojurewasm/zwasm/archive/v1.7.2.tar.gz",
+            .hash = "zwasm-1.6.0-IBbzF3K-KQA1omPPy63QNlvEWV4uV-qS8xmwORW1cV_I",
         },
     },
     .fingerprint = 0x62a7be489d633543,