bump typespec-python 0.49.0 (Azure#42781)

* bump typespec-python to 0.49.0

* Update swagger_to_sdk_config_autorest.json

* Update Autorest Python version to 6.39.0

Author: msyyc

eng/emitter-package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "dist/src/index.js",
   "dependencies": {
-    "@azure-tools/typespec-python": "0.48.2"
+    "@azure-tools/typespec-python": "0.49.0"
   },
   "devDependencies": {
     "@typespec/compiler": "^1.3.0",

eng/emitter-package.json

@@ -2,7 +2,7 @@
   "meta": {
     "autorest_options": {
       "version": "3.10.2",
-      "use": ["@autorest/python@6.38.2", "@autorest/[email protected]"],
+      "use": ["@autorest/python@6.39.0", "@autorest/[email protected]"],
       "python": "",
       "sdkrel:python-sdks-folder": "./sdk/.",
       "version-tolerant": false,

swagger_to_sdk_config_autorest.json

@@ -2,7 +2,7 @@
   "meta": {
     "autorest_options": {
       "version": "3.10.2",
-      "use": ["@autorest/python@6.38.2", "@autorest/[email protected]"]
+      "use": ["@autorest/python@6.39.0", "@autorest/[email protected]"]
     },
     "advanced_options": {
       "create_sdk_pull_requests": true,