Fix Committee keys size

[kderme]

Description

Fixes #1543

Checklist

• Commit sequence broadly makes sense
• Commits have useful messages
• New tests are added if needed and existing tests are updated
• Any changes are noted in the changelog
• Code is formatted with fourmolu on version 0.10.1.0 (which can be run with scripts/fourmolize.sh)
• Self-reviewed the diff

Migrations

• The pr causes a breaking change of type a,b or c
• If there is a breaking change, the pr includes a database migration and/or a fix process for old values, so that upgrade is possible
• Resyncing and running the migrations provided will result in the same database semantically

Changes schema with a migration

[ArturWieczorek]

Should be working with fix on: sancho-2-1-0

./cardano-cli conway governance committee key-hash \
    --verification-key-file cc-cold.vkey > cc-key.hash

cat cc-key.hash
6a61d3862e74df10872a7426c107dad8cea9d784da4a150741e64141

sancho_2_1_0=# select * from committee_registration;
 id | tx_id | cert_index |                          cold_key                          |                          hot_key                           
----+-------+------------+------------------------------------------------------------+------------------------------------------------------------
  1 |  3547 |          0 | \xf17a38bc9c379cc4a251d28bc4ff1efefafd54d94dbd56a80772c14c | \x692e36ce9be15c669be3572f99b2239045006aae5baf9407d11522c9
  2 |  3562 |          0 | \x6a61d3862e74df10872a7426c107dad8cea9d784da4a150741e64141 | \xa600465da048f21ac753b26e4c136e7af51352d4ac77aa02c41c1c9f

No errors in the logs after waiting for a while:

[db-sync-node:Info:58] [2023-10-23 22:04:27.25 UTC] Insert Conway Block: continuing epoch 130 (slot 77667/86400)
[db-sync-node:Info:58] [2023-10-23 22:04:27.25 UTC] Insert Conway Block: epoch 130, slot 11309667, block 541940, hash 954ec67e5f4f8f79acfef35c9aa2fa5e0efe693ee7cbda7640e5c7733aad7e9a
[db-sync-node:Info:58] [2023-10-23 22:05:15.21 UTC] Insert Conway Block: epoch 130, slot 11309715, block 541941, hash 47bd108490cc82c524687de7291efd6c8b09ecc64d9de74362ed0732d78a1324
[db-sync-node:Info:58] [2023-10-23 22:05:57.16 UTC] Insert Conway Block: epoch 130, slot 11309757, block 541942, hash ca9eb559970da10b681f80f1f69d44d6b8c8c2b0b42cc3a603764be25822dcad
[db-sync-node:Info:58] [2023-10-23 22:07:01.28 UTC] Insert Conway Block: epoch 130, slot 11309821, block 541943, hash 3bcad100e458c1df42cf4b0bfdfd0187c8ede51c71dbceb00891f1b0542395a6
[db-sync-node:Info:58] [2023-10-23 22:07:16.24 UTC] Insert Conway Block: epoch 130, slot 11309836, block 541944, hash f78fdcdb4e0d0c56a8f5a457f927df78330c47e945ae4027f6f319412447bd8d
[db-sync-node:Info:58] [2023-10-23 22:07:19.10 UTC] Insert Conway Block: epoch 130, slot 11309839, block 541945, hash c792794f2e46bcd8fd6654a8b87271d0869b59a8c960aad6535eb1801c384135
[db-sync-node:Info:58] [2023-10-23 22:09:22.20 UTC] Insert Conway Block: epoch 130, slot 11309962, block 541946, hash 1aae1381734d5a62bc6b65b6d90c08920fe0e7beb2651d53e448385c3487549c
[db-sync-node:Info:58] [2023-10-23 22:10:19.17 UTC] Insert Conway Block: epoch 130, slot 11310019, block 541947, hash 41bbfdb7dbe337a05f2a59d618049076d8b4dc13f0cac60ea21ade8131ec8356
[db-sync-node:Info:58] [2023-10-23 22:10:50.29 UTC] Insert Conway Block: epoch 130, slot 11310050, block 541948, hash 133c5db399ef7b242d2b0b7fb8b817b2d41eb35c68fb90d3c651af02ac12bf2f
[db-sync-node:Info:58] [2023-10-23 22:11:06.27 UTC] Insert Conway Block: epoch 130, slot 11310066, block 541949, hash da4d983abc9924fd91a69dbe45ba8a9b9a70a58e8b2e536f3f9eeb98e17c8219
[db-sync-node:Info:58] [2023-10-23 22:11:36.15 UTC] Insert Conway Block: epoch 130, slot 11310096, block 541950, hash 9287363ed906800714a86295398099559e14c6d034285f8819d5a4e8761aab1c
[db-sync-node:Info:58] [2023-10-23 22:11:55.16 UTC] Insert Conway Block: epoch 130, slot 11310115, block 541951, hash 13eb7ed3d82474cb9414ff0836ab56a8dcd6d3ecbf795b02e2783f952cc9ff45
[db-sync-node:Info:58] [2023-10-23 22:12:13.10 UTC] Insert Conway Block: epoch 130, slot 11310133, block 541952, hash 6ee3d8a55e28afedbc9bfd11799cb139e0252e43eaebfb6c94824c075a4ede9a
[db-sync-node:Info:58] [2023-10-23 22:13:04.15 UTC] Insert Conway Block: epoch 130, slot 11310184, block 541953, hash 12001b4333efcb963af1231f253ab1366e56bd101f0c3a9f52a9c3fa8ecbe4d2