SDK update to patch potential security vulnerabilities

Patching the SDK with a fix that affects users on Xcode 12.5

Merge pull request #38 from PaystackHQ/patch/fabric

Patch/fabric

Fix issue with pod linting

Document v3.0.12

Bump to version 3.0.6

Allow adding an NSMutableDictionary or an NSMutableArray directly to …

…metadata

[bump] v3.0.4

[hotfix] notify caller of intention to show dialog