auth: requestToken close response body #10145

Job	Run time
Generate Code	1m 6s
Go Lint	1m 32s
Rego PR checks	1m 26s
YAML Lint	21s
WASM	10s
Check Generated	27s
Go Test (linux)	4m 28s
Go Build (linux amd64)	2m 25s
Go compat build/test (ubuntu-22.04, 1.20)	4m 10s
Go Test (darwin)	7m 3s
Go Race Detector	6m 5s
Go Build (linux arm64)	2m 5s
Go compat build/test (macos-latest, 1.20)	7m 20s
Go Build (linux arm64GO_TAGS="-tags=opa_no_oci")	2m 17s
Go Build (windows amd64)	2m 32s
Go Build (darwin amd64)	2m 44s
docker image smoke test	29s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64, amd64)	27s
smoke-test-binaries (linux, ubuntu-22.04, opa_linux_amd64_static, amd64, disabled)	9s
smoke-test-binaries (darwin, macos-latest, opa_darwin_amd64, amd64)	27s
smoke-test-binaries (windows, windows-latest, opa_windows_amd64.exe, amd64)	29s
	48m 12s

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