Please extend PGP/GPG subkey for torbrowser@tpo (0x4E2C6E8793298290)

PGP/GPG subkey for torbrowser@tpo (0x4E2C6E8793298290) expired already on last Saturday, June/12. And I also tried to refresh the key by using a few well-known key servers, and found it's not updated.

$ gpg --keyserver hkps://hkps.pool.sks-keyservers.net --keyserver-options self-sigs-only --refresh-keys 0x4E2C6E8793298290
gpg: refreshing 1 key from hkps://hkps.pool.sks-keyservers.net
gpg: key 0x4E2C6E8793298290: number of dropped non-self-signatures: 121456
gpg: pub  rsa4096/0x4E2C6E8793298290 2014-12-15  Tor Browser Developers (signing key) <torbrowser@torproject.org>
gpg: key 0x4E2C6E8793298290: 12 duplicate signatures removed
gpg: key 0x4E2C6E8793298290: 2 signatures reordered
gpg: key 0x4E2C6E8793298290/0x7017ADCEF65C2036: removed multiple subkey binding
gpg: key 0x4E2C6E8793298290/0x2E1AC68ED40814E0: removed multiple subkey binding
gpg: key 0x4E2C6E8793298290/0xEB774491D9FF06E2: removed multiple subkey binding
gpg: Note: signature key 0xD1483FA6C3C07136 expired Fri 24 Aug 2018 08:26:24 PM JST
gpg: Note: signature key 0xEB774491D9FF06E2 expired Sat 12 Jun 2021 11:35:23 AM JST
gpg: Note: signature key 0x2E1AC68ED40814E0 expired Fri 25 Aug 2017 08:26:30 PM JST
gpg: Note: signature key 0x7017ADCEF65C2036 expired Fri 25 Aug 2017 08:23:23 PM JST
gpg: Note: signature key 0x2D000988589839A3 has been revoked
gpg: key 0x4E2C6E8793298290: "Tor Browser Developers (signing key) <torbrowser@torproject.org>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

So currently there's only valid subkey for certification, but no valid subkey for signature:

$ gpg -k 0x4E2C6E8793298290
pub   rsa4096/0x4E2C6E8793298290 2014-12-15 [C] [expires: 2025-07-21]
      Key fingerprint = EF6E 286D DA85 EA2A 4BA7  DE68 4E2C 6E87 9329 8290
uid                   [ unknown] Tor Browser Developers (signing key) <torbrowser@torproject.org>

And there're quite a few issue reports that failed to get TBB installed:

I hope this key update can be fixed soon. Thank you!

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