fix(ci): downgrade mac-notification-sys to 0.6.1

fixes a cc build script usage

.github/workflows/covector-version-or-publish-v1.yml

@@ -131,6 +131,7 @@ jobs:
           cargo update -p native-tls --precise 0.2.11
           cargo update -p ppv-lite86 --precise 0.2.17
           cargo update -p xml-rs --precise 0.8.20
+          cargo update -p mac-notification-sys --precise 0.6.1
 
       - name: Downgrade crates with MSRV conflict (bundler)
         # This is for the bundler but since cli depends on the bundler we enable it for the cli too

core/tauri-config-schema/schema.json

@@ -248,6 +248,7 @@
         },
         "version": {
           "description": "App version. It is a semver version number or a path to a `package.json` file containing the `version` field. If removed the version number from `Cargo.toml` is used.",
+          "default": null,
           "type": [
             "string",
             "null"

tooling/cli/schema.json

@@ -248,6 +248,7 @@
         },
         "version": {
           "description": "App version. It is a semver version number or a path to a `package.json` file containing the `version` field. If removed the version number from `Cargo.toml` is used.",
+          "default": null,
           "type": [
             "string",
             "null"