download: Oto has left

I see he's signed 6.0.7.tar.xz.asc
A pair of keys should be sufficient redundancy right now.

content/pages/en/download.rst

@@ -115,12 +115,10 @@ New releases are signed with one of our developer PGP keys:
         B6006460B60A80E782062449E747DF1F9575A3AA
   uid           Vladimír Čunát (work) <vladimir.cunat@nic.cz>
 
-  pub   ed25519 2024-01-31 [SC] [expires: 2027-01-30]
-        6DC2B0CB5935EA7A39614AA732B22D20C9B4E680
-  uid           Oto Šťáva (work CZ.NIC) <oto.stava@nic.cz>
-
 Older releases may be signed using the following keys:
 
+- `6DC2B0CB5935EA7A39614AA732B22D20C9B4E680.asc
+  <https://keys.openpgp.org/vks/v1/by-fingerprint/6DC2B0CB5935EA7A39614AA732B22D20C9B4E680>`__
 - `4A8BA48C2AED933BD495C509A1FBA5F7EF8C4869.asc
   <https://keys.openpgp.org/vks/v1/by-fingerprint/4A8BA48C2AED933BD495C509A1FBA5F7EF8C4869>`__
 - `BE26EBB9CBE059B3910CA35BCE8DD6A1A50A21E4.asc