Regular patch release containing several fixes and chores.

What's Changed

• docs: fix broken link by @futreall in #4011
• fix: cli with malformed height by @jcstein in #4107
• fix(docgen): add network.Direction by @cristaloleg in #4115
• fix(core): add retry logic for the grpc subscription by @vgonkivs in #4093
• fix(share/peer-manager): fix potential nil dereference in peer manager by @walldiss in #4117
• improvement(core): increase message size to 64Mb by @vgonkivs in #4133
• chore(ci): fail openrpc-gen if error by @cristaloleg in #4116
• docs: update readme by @jcstein in #4127
• chore: fix typos by @cristaloleg in #4119
• feat(shwap/bitswap): add blockstore metrics by @walldiss in #3862
• feat: reduce celestia labs ran botstrapper by @smuu in #4138
• chore(go.mod): bump libp2p deps by @Wondertan in #4113
• fix(shwap/discovery): increase DHT refresh interval to default 10mins by @Wondertan in #4150
• Fix broken link(s) to node requirements in readme. by @adlerjohn in #4157
• deps(go.mod): bump app by @renaynay in #4161
• refactor: replace golang.org/x/exp with stdlib by @wangjingcun in #4159
• feat: Add Binary Builders mocha-4 bootstrapper by @auricom in #4144
• chore(go.mod): bump boxo fork by @Wondertan in #4114
• ci: bump golangci-lint by @cristaloleg in #4163
• feat(modp2p): reachability check by @Wondertan in #4164
• deps(go.mod): app bump to mocha by @renaynay in #4167
• chore(deps): Bump golang.org/x/net from 0.35.0 to 0.36.0 by @dependabot in #4169
• perf(header): MsgID func only needs to unmarshal Commit from ExtendedHeader by @renaynay in #4149
• fix(nodebuilder/p2p): fix autonat == nil panic in test by @renaynay in #4170
• deps(go.mod): bump app by @renaynay in #4174
• deps(go.mod): bump app by @renaynay in #4175
• refactor: replace custom appendTo methods with encoding.AppendBinary by @leopardracer in #4160
• fix: use a more straightforward return value by @looklose in #4136

New Contributors

• @futreall made their first contribution in #4011
• @wangjingcun made their first contribution in #4159
• @auricom made their first contribution in #4144
• @leopardracer made their first contribution in #4160
• @looklose made their first contribution in #4136

Full Changelog: v0.21.5...v0.21.9