Bump serverless-offline from 6.3.0 to 6.4.0

Bumps [serverless-offline](https://github.com/dherault/serverless-offline) from 6.3.0 to 6.4.0.
- [Release notes](https://github.com/dherault/serverless-offline/releases)
- [Commits](https://github.com/dherault/serverless-offline/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -21,7 +21,7 @@
     "aws-sdk-mock": "^5.1.0",
     "jest": "^25.5.3",
     "serverless": "^1.74.1",
-    "serverless-offline": "^6.3.0",
+    "serverless-offline": "^6.4.0",
     "serverless-webpack": "^5.3.2",
     "ts-jest": "^25.5.1",
     "ts-loader": "^7.0.5",