Zed update through "service: add test for non-time ts field" by nwt

This is an auto-generated commit with a Zed dependency update. The Zed PR
brimdata/super#2747, authored by @nwt,
has been merged.

service: add test for non-time ts field

I meant to include this in brimdata/super#2745.

go.mod

@@ -3,7 +3,7 @@ module github.com/brimdata/brimcap
 go 1.16
 
 require (
-	github.com/brimdata/zed v0.29.1-0.20210520220207-58dbccc8fb1f
+	github.com/brimdata/zed v0.29.1-0.20210520232652-d0b2458c304f
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/golang/mock v1.5.0
 	github.com/google/gopacket v1.1.19

go.sum

@@ -18,8 +18,8 @@ github.com/axiomhq/hyperloglog v0.0.0-20191112132149-a4c4c47bc57f/go.mod h1:2stg
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/brimdata/zed v0.29.1-0.20210520220207-58dbccc8fb1f h1:U2/EtwVC+esoA1oF2p+bwdyJsjoxFaeTVKBXsSpnNN8=
-github.com/brimdata/zed v0.29.1-0.20210520220207-58dbccc8fb1f/go.mod h1:qfj6p4h0TQIyKtyuqltO3jneIUP6C1hRS5THEul7Rls=
+github.com/brimdata/zed v0.29.1-0.20210520232652-d0b2458c304f h1:rYUieo0Ze7dnkXiJ7OOY21fFkL3y/R/SCHeTnwENa5c=
+github.com/brimdata/zed v0.29.1-0.20210520232652-d0b2458c304f/go.mod h1:qfj6p4h0TQIyKtyuqltO3jneIUP6C1hRS5THEul7Rls=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=