chore: bump acadrust to current main

Picks up the AC18 section-name fix (cut at first null), so DWGs whose
writer left garbage after the name terminator load their entities
instead of opening with zero. Also rolls in the intervening upstream
ellipse-WCS and reflecting-transform fixes already on main.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

Cargo.lock

@@ -56,7 +56,7 @@ checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
 [[package]]
 name = "acadrust"
 version = "0.3.4"
-source = "git+https://github.com/HakanSeven12/acadrust?branch=main#64efaf874cc50a27b09648d6a2e281696fe09888"
+source = "git+https://github.com/HakanSeven12/acadrust?branch=main#426a35372c509e07e075ed247b2fa964216df345"
 dependencies = [
  "ahash",
  "anyhow",
@@ -3178,7 +3178,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b577e2d69827c4740cba2b52efaad1c4cc7c73042860b199710b3575c68438d"
 dependencies = [
  "bytecount",
- "memchr 2.8.1",
+ "memchr 1.0.2",
  "nom 8.0.0",
 ]