[release] 1.53.10 - Fix removeOverride persistence (#413)

### Improvements
  - Improve performance when checking feature gates, experiments, etc.
  - Improve thread-safety of Statsig.initialize
  ### Fixes
  - Fix removeOverride persistence





>Included In This Release
>- c6ae0e0 Andre Terron
> - Fix InternalStore.removeOverride to call saveOverrides for state
persistence (#412)
>- 2c254a2 Andre Terron
>   - Use structs for dedupe keys (#408)
>- acb8a94 Andre Terron
>   - Fix network timeout test intermittently failing (#409)
>- d2e94e2 Andre Terron
>   - Add a lock around Statsig.initialize (#407)

Author: andre-statsig

Sources/Statsig/DeviceEnvironment.swift

@@ -7,7 +7,7 @@ struct DeviceEnvironment {
 
     static internal let deviceOS = PlatformCompatibility.deviceInfo.os
     static internal let sdkType: String = "ios-client"
-    static internal let sdkVersion: String = "1.53.9"
+    static internal let sdkVersion: String = "1.53.10"
 
     let lock = NSLock()
     var sessionID: String? { UUID().uuidString }

Statsig.podspec

@@ -1,7 +1,7 @@
 Pod::Spec.new do |spec|
 
   spec.name         = "Statsig"
-  spec.version      = "1.53.9"
+  spec.version      = "1.53.10"
   spec.summary      = "Statsig enables developers to ship code faster and more safely."
   spec.description  = <<-DESC
                    Statsig enables developers to ship code faster and more safely by providing: