Replace the usage of the deprecated googletag methods with the updated versions

[robin-crazygames]

For example, all targeting related methods on googletag.pubads() and googletag.Slot are deprecated.

[dgirardi]

List of deprecated APIs is here

in the codebase I believe we only use getTargeting / setTargeting / updateTargetingFromMap. In the examples we also use disableInitialLoad, enableSingleRequest.