*: replace interface{} with any keyword

Everywhere including examples, external interop APIs, bindings generators
code and in other valuable places. A couple of `interface{}` usages are
intentionally left in the CHANGELOG.md, documentation and tests.

examples/timer/timer.go

@@ -25,7 +25,7 @@ func init() {
 	ctx = storage.GetContext()
 }
 
-func _deploy(_ interface{}, isUpdate bool) {
+func _deploy(_ any, isUpdate bool) {
 	if isUpdate {
 		ticksLeft := storage.Get(ctx, ticksKey).(int) + 1
 		storage.Put(ctx, ticksKey, ticksLeft)