Build runsc-metric-server binary using nocgo instead of static.

PiperOrigin-RevId: 710134102

Author: EtiennePerot

runsc/cmd/metricserver/BUILD

@@ -11,8 +11,7 @@ go_binary(
     srcs = [
         "metricserver_main.go",
     ],
-    features = ["no_default_linker_script"],
-    static = True,
+    pure = True,
     visibility = [
         "//:sandbox",
     ],