use public countries API for GraphQL examples #204

Job	Run time
search	4s
build (sdk/assemblyscript/examples/anthropic-functions)	22s
build (sdk/assemblyscript/examples/auth)	23s
build (sdk/assemblyscript/examples/classification)	21s
build (sdk/assemblyscript/examples/collections)	20s
build (sdk/assemblyscript/examples/dgraph)	21s
build (sdk/assemblyscript/examples/embedding)	21s
build (sdk/assemblyscript/examples/graphql)	21s
build (sdk/assemblyscript/examples/http)	21s
build (sdk/assemblyscript/examples/postgresql)	22s
build (sdk/assemblyscript/examples/simple)	20s
build (sdk/assemblyscript/examples/textgeneration)	24s
build (sdk/assemblyscript/examples/vectors)	21s
	4m 21s

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