Ups podspec min versions for modern xcode (xcode 14.3.x)

[R4N]

iOS min 11, macOS min 10.13, watchOS min 7.0.

Should fix: #844

[ccgus]

I think you meant '13' instead of '10.13' for the MacOS min? Or does podspec need it to be in a 10.x format? (Also - maybe make it '11' since I know folks still target older releases. MacOS 13 isn't even a year old at this point.

[R4N]

Deployment targets are the min os version capable of running it. I believe we'll want to leave this as low as possible while still supporting modern Xcode version to allow as many devices to be able to use it as possible. For macOS it needs to use the full macOS version number (i.e. 10.13 -- High Sierra). When creating a new project in Xcode 14.3.x the minimum deployments available are what the Podspec is adjusted to in this pull request.