Upgrade polyfillservice to 1.2.1 to patch a Symbol.toStringTag (#1364)
Upgrade polyfillservice to 1.2.1 to patch a Symbol.toStringTag (#1364)

@P4CL 14293522@
@bug W-4215082@
@runcoreitests@
@rev byao@
madmax983/aura,forcedotcom/aura,forcedotcom/aura,madmax983/aura,forcedotcom/aura,madmax983/aura,madmax983/aura,madmax983/aura,forcedotcom/aura,forcedotcom/aura,madmax983/aura