build: mobile CI fixes (#3322)

* build: use metatags on cocoapods, not prerelease tags
* build: fix Maven and CocoaPods author email addresses

build/pod.podspec

@@ -14,9 +14,9 @@ Pod::Spec.new do |spec|
 	spec.ios.vendored_frameworks = 'Frameworks/Geth.framework'
 
 	spec.prepare_command = <<-CMD
-    curl https://gethstore.blob.core.windows.net/builds/geth-ios-all-{{.Version}}.tar.gz | tar -xvz
+    curl https://gethstore.blob.core.windows.net/builds/{{.Archive}}.tar.gz | tar -xvz
     mkdir Frameworks
-    mv geth-ios-all-{{.Version}}/Geth.framework Frameworks
-    rm -rf geth-ios-all-{{.Version}}
+    mv {{.Archive}}/Geth.framework Frameworks
+    rm -rf {{.Archive}}
   CMD
 end