fix: revert typespec (#313)

try avoid error due to mismatched peer dependency constraints
```
npm error code ERESOLVE
npm error ERESOLVE unable to resolve dependency tree
npm error
npm error While resolving: undefined@undefined
npm error Found: @typespec/versioning@0.67.1
npm error node_modules/@typespec/versioning
npm error   peerOptional @typespec/versioning@"^0.67.1" from @typespec/openapi3@0.67.1
npm error   node_modules/@typespec/openapi3
npm error     peerOptional @typespec/openapi3@"^0.67.0" from @nahkies/openapi-code-generator@0.19.0
npm error     node_modules/@nahkies/openapi-code-generator
npm error       @nahkies/openapi-code-generator@"0.19.0" from the root project
npm error
npm error Could not resolve dependency:
npm error peerOptional @typespec/versioning@"^0.68.0" from @nahkies/openapi-code-generator@0.19.0
npm error node_modules/@nahkies/openapi-code-generator
npm error   @nahkies/openapi-code-generator@"0.19.0" from the root project
npm error
npm error Fix the upstream dependency conflict, or retry
npm error this command with --force or --legacy-peer-deps
npm error to accept an incorrect (and potentially broken) dependency resolution.
```

Author: mnahkies

packages/openapi-code-generator/package.json

@@ -25,20 +25,20 @@
     "test": "jest"
   },
   "devDependencies": {
-    "@azure-tools/typespec-autorest": "^0.54.0",
-    "@azure-tools/typespec-azure-core": "^0.54.0",
-    "@azure-tools/typespec-azure-resource-manager": "^0.54.0",
-    "@azure-tools/typespec-client-generator-core": "^0.54.1",
+    "@azure-tools/typespec-autorest": "^0.53.0",
+    "@azure-tools/typespec-azure-core": "^0.53.0",
+    "@azure-tools/typespec-azure-resource-manager": "^0.53.0",
+    "@azure-tools/typespec-client-generator-core": "^0.53.1",
     "@types/js-yaml": "^4.0.9",
     "@types/lodash": "^4.17.16",
     "@types/prettier": "^3.0.0",
-    "@typespec/compiler": "1.0.0-rc.0",
-    "@typespec/http": "1.0.0-rc.0",
-    "@typespec/openapi": "1.0.0-rc.0",
-    "@typespec/openapi3": "1.0.0-rc.0",
-    "@typespec/rest": "^0.68.0",
-    "@typespec/versioning": "^0.68.0",
-    "@typespec/xml": "^0.68.0"
+    "@typespec/compiler": "^0.67.0",
+    "@typespec/http": "^0.67.0",
+    "@typespec/openapi": "^0.67.0",
+    "@typespec/openapi3": "^0.67.0",
+    "@typespec/rest": "^0.67.1",
+    "@typespec/versioning": "^0.67.1",
+    "@typespec/xml": "^0.67.1"
   },
   "dependencies": {
     "@biomejs/biome": "1.9.4",
@@ -62,7 +62,7 @@
     "@typespec/http": "^0.67.0",
     "@typespec/openapi": "^0.67.0",
     "@typespec/openapi3": "^0.67.0",
-    "@typespec/versioning": "^0.68.0"
+    "@typespec/versioning": "^0.67.1"
   },
   "peerDependenciesMeta": {
     "@typespec/compiler": {