v1.36.8: zap v1.2.4 value ObjectBuilder — faster wire build node-wide

zap v1.2.4 (eager-reserve + value-type ObjectBuilder: zero defer-slice, zero
per-StartObject heap alloc) + utxo v0.5.7. Byte-identical wire — 21 platformvm/
xvm/components-lux/da packages green. Node-side setEnvelope/setValidator/setID/
setOwner/setSecurity/writeIDInto helpers take zap.ObjectBuilder by value (its
methods mutate through ob.b, so value + pointer are equivalent). Speeds every
ZAP object build (P/X txs, blocks, warp, da), not just X-tx. X-tx wire composite
922->655ns / 11->5 allocs.

Co-authored-by: Hanzo Dev <dev@hanzo.ai>

version/compatibility.json

@@ -69,7 +69,8 @@
     "v1.36.4",
     "v1.36.5",
     "v1.36.6",
-    "v1.36.7"
+    "v1.36.7",
+    "v1.36.8"
   ],
   "41": [
     "v1.13.2"

version/constants.go

@@ -77,7 +77,7 @@ var (
 const (
 	defaultMajor = 1
 	defaultMinor = 36
-	defaultPatch = 7
+	defaultPatch = 8
 )
 
 func init() {