Update Rust crate smoltcp to 0.12

[oxide-renovate]

This PR contains the following updates:

Package	Type	Update	Change
smoltcp	workspace.dependencies	minor	0.11 -> 0.12

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Release Notes

smoltcp-rs/smoltcp (smoltcp)

v0.12.0

Compare Source

Almost a year in the making, the highlights of the release are the migration to core::net IP types, IPv6 multicast, TCP improvements, and many fixes. Smoltcp now connects your gadgets to the Internet better than ever.

• Minimum Supported Rust Version (MSRV) bumped to 1.80.
• iface
  • IPv6 multicast (#​914, #​976, #​988, #​1009, #​1012)
  • Add poll_egress() and poll_ingress_single() methods for finer-grained control of what and how many packets are processed. (#​954, #​991, #​993)
  • Multicast join/leave no longer requires access to device+timestamp. (#​985)
  • Reset expiry of entries in the neighbor cache on packet reception (#​966)
  • Honor any_ip for ARP (#​880)
  • Honor any_ip for IPv6 (#​900)
  • Use own source address for ARP and NDISC Solicitations (#​984)
  • fix panic when discarding HBH Option with multicast destination address (#​996)
  • fix panic with 6lowpan frag datagram_size < 40 (#​997)
  • fix panic if no suitable IPv6 src_addr is found (#​895)
  • Fix specific length IP packets not being fragmented (#​1008)
• tcp
  • Add support for congestion control (#​907)
  • Add support for simultaneous open (#​1001)
  • Add support for Timestamp option (#​939)
  • Send immediate ACKs after RMSS bytes of data (#​1002)
  • Do not ignore FIN if segment is partially outside the window. (#​977)
  • Correctly set internal sACK flag for client sockets (#​995)
  • Only reset remote_last_ts if some data is enqueued (#​917)
  • Don't delay ACKs for significant window updates (#​935)
  • Add listen_endpoint getter (#​1005)
• socket
  • UDP,ICMP,raw: Add send_queue/recv_queue (#​1003)
  • ICMP: split ICMPv4/v6 accept and process (#​887)
  • UDP: Store local and use local address in metadata (#​904)
  • DNS: fix panic if server list is too long (#​986)
  • DNS: fix panic if no valid source address is found (#​987)
• phy
  • Change mutability of RxToken's consume argument. (#​924)
  • Add support for NetBSD (#​883)
  • Add minimum support for iOS (#​896)
  • Add BPF support for FreeBSD (#​906)
  • disable checksums on loopback (#​919)
• wire
  • Use core::net types for IP addresses. (#​937, #​994)
  • Add missing exports in wire for DNS (#​891)
  • rename Scope to MulticastScope (#​898)
  • Re-export dhcpv4::Flags and dhcpv4::OpCode (#​901)
  • Make Address:v6() constructor const (#​975)
  • Ipv6RoutingHeader::clear_reserved: fix offsets for Type 2 routing headers. (#​882)

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