fix(feature/specta): Resolve error when using latest version of specta with tauri specta feature (#11871)

* Update specta feature to use latest specta version; add specta-util dependency (required in specta v2 rc.20)

* Add .changes file

* Update crates/tauri/Cargo.toml

---------

Co-authored-by: Lucas Fernandes Nogueira <lucas@tauri.app>

.changes/specta-feature-fix.md

@@ -0,0 +1,5 @@
+---
+"tauri": patch:bug
+---
+
+Fix `specta-util` dependency not found error when using `specta` feature

Cargo.lock

@@ -4867,7 +4867,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4979f22fdb869068da03c9f7528f8297c6fd2606bc3a4affe42e6a823fdb8da4"
 dependencies = [
  "cfg-if",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -8595,6 +8595,18 @@ dependencies = [
  "syn 2.0.90",
 ]
 
+[[package]]
+name = "specta-util"
+version = "0.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8113d65b58a6de3184b01d6df9e50b6d4bbe7f724251f576d84f23228824456"
+dependencies = [
+ "ctor",
+ "serde",
+ "specta",
+ "specta-macros",
+]
+
 [[package]]
 name = "spin"
 version = "0.9.8"
@@ -9032,6 +9044,7 @@ dependencies = [
  "serde_repr",
  "serialize-to-javascript",
  "specta",
+ "specta-util",
  "swift-rs",
  "tauri",
  "tauri-build",
@@ -10798,7 +10811,7 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
 dependencies = [
- "windows-sys 0.48.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]

crates/tauri/Cargo.toml

@@ -85,11 +85,14 @@ tracing = { version = "0.1", optional = true }
 heck = "0.5"
 log = "0.4"
 dunce = "1"
-specta = { version = "^2.0.0-rc.16", optional = true, default-features = false, features = [
+specta = { version = "^2.0.0-rc.20", optional = true, default-features = false, features = [
   "function",
   "derive",
 ] }
-
+# TODO: remove when specta releases rc.21
+specta-util = { version = "^0.0.7", optional = true, default-features = false, features = [
+  "export",
+] }
 [target."cfg(any(target_os = \"linux\", target_os = \"dragonfly\", target_os = \"freebsd\", target_os = \"openbsd\", target_os = \"netbsd\", target_os = \"windows\", target_os = \"macos\"))".dependencies]
 muda = { version = "0.15", default-features = false, features = ["serde"] }
 tray-icon = { version = "0.19", default-features = false, features = [
@@ -192,7 +195,7 @@ config-toml = ["tauri-macros/config-toml"]
 image-ico = ["image/ico"]
 image-png = ["image/png"]
 macos-proxy = ["tauri-runtime-wry/macos-proxy"]
-specta = ["dep:specta"]
+specta = ["dep:specta", "dep:specta-util"]
 
 [[example]]
 name = "commands"