go.mod: bump anacrolix/torrent to halve per-piece memory (erigontech#21837)

Bumps `github.com/anacrolix/torrent` to a revision that shrinks the
`Piece` struct.

## What

The torrent `Piece` struct was reduced from ~288 bytes to 144 bytes
(field reordering to remove padding, making `hashV2` a pointer, and
interning the published piece state). This drops each `Piece` from the
288-byte allocation size class to the 144-byte size class — both
exact-fit classes, so the per-piece footprint is **halved**.

With mainnet snapshots holding millions of pieces across all torrents,
this is a meaningful reduction in steady-state torrent memory.

## Relation to erigontech#21684

This is one part of reducing torrent RAM usage. A follow-up PR will
reduce the **piece count** itself (dynamic per-snapshot piece sizing),
which compounds with this change.

Refs erigontech#21684

Author: anacrolix

go.mod

@@ -28,7 +28,7 @@ require (
 	github.com/anacrolix/log v0.17.1-0.20251118025802-918f1157b7bb
 	github.com/anacrolix/missinggo/v2 v2.10.0
 	github.com/anacrolix/sync v0.5.5-0.20251119100342-d78dd1f686f1
-	github.com/anacrolix/torrent v1.61.1-0.20260423052610-0aa61207b935
+	github.com/anacrolix/torrent v1.61.1-0.20260616065448-83a4fbaf66d5
 	github.com/benesch/cgosymbolizer v0.0.0-20190515212042-bec6fe6e597b
 	github.com/c2h5oh/datasize v0.0.0-20231215233829-aa82cc1e6500
 	github.com/cenkalti/backoff/v4 v4.3.0
@@ -160,7 +160,7 @@ require (
 	github.com/alingse/nilnesserr v0.2.0 // indirect
 	github.com/anacrolix/btree v0.1.1 // indirect
 	github.com/anacrolix/chansync v0.7.0 // indirect
-	github.com/anacrolix/dht/v2 v2.23.0 // indirect
+	github.com/anacrolix/dht/v2 v2.23.1-0.20260525063928-ec3a9bd99456 // indirect
 	github.com/anacrolix/missinggo v1.3.0 // indirect
 	github.com/anacrolix/missinggo/perf v1.0.0 // indirect
 	github.com/anacrolix/mmsg v1.0.1 // indirect

go.sum

@@ -111,8 +111,8 @@ github.com/anacrolix/btree v0.1.1 h1:igdFPLrt82L6qovzbEGSMkTeiwcU3EFIGl2K8XWocAc
 github.com/anacrolix/btree v0.1.1/go.mod h1:KHWYRZuUULATjUGJC4dQDXx/BPOnWrJozGR6TndjOmc=
 github.com/anacrolix/chansync v0.7.0 h1:wgwxbsJRmOqNjil4INpxHrDp4rlqQhECxR8/WBP4Et0=
 github.com/anacrolix/chansync v0.7.0/go.mod h1:DZsatdsdXxD0WiwcGl0nJVwyjCKMDv+knl1q2iBjA2k=
-github.com/anacrolix/dht/v2 v2.23.0 h1:EuD17ykTTEkAMPLjBsS5QjGOwuBgLTdQhds6zPAjeVY=
-github.com/anacrolix/dht/v2 v2.23.0/go.mod h1:seXRz6HLw8zEnxlysf9ye2eQbrKUmch6PyOHpe/Nb/U=
+github.com/anacrolix/dht/v2 v2.23.1-0.20260525063928-ec3a9bd99456 h1:5ylkQM8XiZxJw1yhWlV8ICyzl4DNRbEPR4FNlYKpEgs=
+github.com/anacrolix/dht/v2 v2.23.1-0.20260525063928-ec3a9bd99456/go.mod h1:0IpTSbqYnFcjmexGvnINUGq/kbx93S5cKIryH4oJL8U=
 github.com/anacrolix/envpprof v0.0.0-20180404065416-323002cec2fa/go.mod h1:KgHhUaQMc8cC0+cEflSgCFNFbKwi5h54gqtVn8yhP7c=
 github.com/anacrolix/envpprof v1.0.0/go.mod h1:KgHhUaQMc8cC0+cEflSgCFNFbKwi5h54gqtVn8yhP7c=
 github.com/anacrolix/envpprof v1.1.0/go.mod h1:My7T5oSqVfEn4MD4Meczkw/f5lSIndGAKu/0SM/rkf4=
@@ -155,8 +155,8 @@ github.com/anacrolix/sync v0.5.5-0.20251119100342-d78dd1f686f1/go.mod h1:21cUWer
 github.com/anacrolix/tagflag v0.0.0-20180109131632-2146c8d41bf0/go.mod h1:1m2U/K6ZT+JZG0+bdMK6qauP49QT4wE5pmhJXOKKCHw=
 github.com/anacrolix/tagflag v1.0.0/go.mod h1:1m2U/K6ZT+JZG0+bdMK6qauP49QT4wE5pmhJXOKKCHw=
 github.com/anacrolix/tagflag v1.1.0/go.mod h1:Scxs9CV10NQatSmbyjqmqmeQNwGzlNe0CMUMIxqHIG8=
-github.com/anacrolix/torrent v1.61.1-0.20260423052610-0aa61207b935 h1:7zYUWXNTCDMQSTO/SIYUOXbn/tEp5D5wWQJycahpst0=
-github.com/anacrolix/torrent v1.61.1-0.20260423052610-0aa61207b935/go.mod h1:WOyzkjUtFTK7sZNqgGtoAmWLUsJ0XIwyvw0zLI63h7M=
+github.com/anacrolix/torrent v1.61.1-0.20260616065448-83a4fbaf66d5 h1:EhVVofl783IS1BPTnMN1PIemm+XsgWIbXO9OrVAQL88=
+github.com/anacrolix/torrent v1.61.1-0.20260616065448-83a4fbaf66d5/go.mod h1:XoYwl8ukZrq8ufRqkQzZ/I1ig98D9y3go2TVtHM2nFE=
 github.com/anacrolix/upnp v0.1.4 h1:+2t2KA6QOhm/49zeNyeVwDu1ZYS9dB9wfxyVvh/wk7U=
 github.com/anacrolix/upnp v0.1.4/go.mod h1:Qyhbqo69gwNWvEk1xNTXsS5j7hMHef9hdr984+9fIic=
 github.com/anacrolix/utp v0.1.0 h1:FOpQOmIwYsnENnz7tAGohA+r6iXpRjrq8ssKSre2Cp4=