fix: add support for multiple jwks keys per endpoint #513

Job	Run time
search	4s
test (sdk/go/templates/default)	18s
test (sdk/go/examples/simple)	20s
test (sdk/go/examples/embedding)	18s
test (sdk/go/examples/textgeneration)	14s
test (sdk/go/examples/http)	18s
test (sdk/go/examples/postgresql)	16s
test (sdk/go/examples/collections)	14s
test (sdk/go/examples/neo4j)	18s
test (sdk/go/examples/classification)	17s
test (sdk/go/examples/graphql)	17s
test (sdk/go/examples/anthropic-functions)	19s
test (sdk/go/examples/vectors)	13s
test (sdk/go/examples/dgraph)	20s
test (sdk/go/examples/auth)	12s
test (sdk/go/examples/time)	18s
test (sdk/go/examples/mysql)	18s
test (sdk/go)	28s
test (lib/manifest)	18s
test (lib/wasmextractor)	15s
test (lib/metadata)	16s
test (runtime/languages/golang/testdata)	14s
test (runtime)	1m 19s
	7m 24s

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