Merge pull request #2253 from ton-blockchain/testnet

quic: do not extend stream offset for failed stream (#2256)

Send shard block desc in fast-sync overlay without twostep (#2254)

Add changelogs (#2251)

Weight heavy full-node ratelimit by chunk size (#2250)

Better check for finalized blocks in StateResolver (#2248)

Improve getting mtu for streams in quic (#2232)

Merge pull request #2228 from ton-blockchain/broadcast-patch

Merge branch 'testnet' into broadcast-patch

Merge pull request #2240 from DanShaders/simplex-dos-hardening

Check certificate signatures only after cheap semantic checks

Allow to vote Notar on slots for which we observed Notar already

Temporarily ban peers that send bad Simplex votes/certificates

Limit egress allocated to standstill resolution

Rate-limit consensus.simplex.requestCandidate requests