bug: intermittent data race noticed in CI

[chaitanyaprem]

Describe the bug
Noticed the below data race only once in the CI, on rerunning the tests they succeeded.

==================
WARNING: DATA RACE
Write at 0x00c0002c9a00 by goroutine 1316:
  github.com/waku-org/go-waku/waku/v2/protocol/relay.(*WakuRelay).SetHost()
      /home/runner/work/go-waku/go-waku/waku/v2/protocol/relay/waku_relay.go:122 +0x3d
  github.com/waku-org/go-waku/waku/v2/node.(*WakuNode).Start()
      /home/runner/work/go-waku/go-waku/waku/v2/node/wakunode2.go:427 +0x14a7
  github.com/waku-org/go-waku/waku/v2/node.TestUpAndDown()
      /home/runner/work/go-waku/go-waku/waku/v2/node/wakunode2_test.go:105 +0x704
  testing.tRunner()
      /opt/hostedtoolcache/go/1.20.12/x64/src/testing/testing.go:1576 +0x216
  testing.(*T).Run.func1()
      /opt/hostedtoolcache/go/1.20.12/x64/src/testing/testing.go:1629 +0x47

Previous read at 0x00c0002c9a00 by goroutine 1935:
  github.com/waku-org/go-waku/waku/v2/protocol/relay.(*WakuRelay).peerScoreInspector()
      /home/runner/work/go-waku/go-waku/waku/v2/protocol/relay/waku_relay.go:105 +0x54
  github.com/waku-org/go-waku/waku/v2/protocol/relay.(*WakuRelay).peerScoreInspector-fm()
      <autogenerated>:1 +0x44
  github.com/libp2p/go-libp2p-pubsub.(*peerScore).inspectScoresExtended.func1()
      /home/runner/go/pkg/mod/github.com/libp2p/[email protected]/score.go:499 +0x47

Goroutine 1316 (running) created at:
  testing.(*T).Run()
      /opt/hostedtoolcache/go/1.20.12/x64/src/testing/testing.go:1629 +0x805
  testing.runTests.func1()
      /opt/hostedtoolcache/go/1.20.12/x64/src/testing/testing.go:2036 +0x8d
  testing.tRunner()
      /opt/hostedtoolcache/go/1.20.12/x64/src/testing/testing.go:1576 +0x216
  testing.runTests()
      /opt/hostedtoolcache/go/1.20.12/x64/src/testing/testing.go:2034 +0x87c
  testing.(*M).Run()
      /opt/hostedtoolcache/go/1.20.12/x64/src/testing/testing.go:1906 +0xb44
  main.main()
      _testmain.go:63 +0x2e9

Goroutine 1935 (finished) created at:
  github.com/libp2p/go-libp2p-pubsub.(*peerScore).inspectScoresExtended()
      /home/runner/go/pkg/mod/github.com/libp2p/[email protected]/score.go:499 +0x564
  github.com/libp2p/go-libp2p-pubsub.(*peerScore).inspectScores()
      /home/runner/go/pkg/mod/github.com/libp2p/[email protected]/score.go:453 +0x6a
  github.com/libp2p/go-libp2p-pubsub.(*peerScore).background.func5()
      /home/runner/go/pkg/mod/github.com/libp2p/[email protected]/score.go:423 +0x39
  runtime.deferreturn()
      /opt/hostedtoolcache/go/1.20.12/x64/src/runtime/panic.go:476 +0x32
  github.com/libp2p/go-libp2p-pubsub.(*peerScore).Start.func1()
      /home/runner/go/pkg/mod/github.com/libp2p/[email protected]/score.go:251 +0x58
==================