Bump Electrum-NMC to final 3.3.11

Tor Browser is using an early commit hash in the Electrum-NMC 3.3.11 branch; bumping the commit hash to the final Electrum-NMC 3.3.11 release (which I tagged today) will advance the checkpoint, which will speed up initial syncup. (I'll send in a patch for this ASAP.)

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