v1.0.3

The changes made by @talatkuyuk:

• updated the dependencies
• updated the README.md
  • added some security concerns
  • improved the table of feature comparison between next-mdx-remote and next-mdx-remote-client
  • more explanation for the type parameters Frontmatter and Scope should extend Record<string, unknown> and should be defined using type alias instead of interface
  • more explanation for the option disableParentContext
• added a test file for MDXProvider and disableParentContext usage