386 build failing after LSM PR merge

[carsonip]

After #11117 merge, 386 builds have been failing as pebble does not support 386:

$ CGO_ENABLED=0 GOOS=linux GOARCH=386 go build /home/carson/projects/apm-server/x-pack/apm-server
# github.com/cockroachdb/pebble/internal/batchskl
../../apm-server-gopath/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230627193317-c807f60529a3/internal/batchskl/skl.go:310:18: maxNodesSize (untyped int constant 4294967295) overflows int
../../apm-server-gopath/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230627193317-c807f60529a3/internal/batchskl/skl.go:320:16: cannot use maxNodesSize (untyped int constant 4294967295) as int value in assignment (overflows)
# github.com/cockroachdb/pebble/internal/testkeys
../../apm-server-gopath/pkg/mod/github.com/cockroachdb/pebble@v0.0.0-20230627193317-c807f60529a3/internal/testkeys/testkeys.go:30:46: cannot use math.MaxInt64 (untyped int constant 9223372036854775807) as int value in argument to fmt.Sprintf (overflows)

[carsonip]

Closing as #11403 is merged