Caplin: lru non-positive ttl

[AskAlexSharov]

Gnosis --internalcl synced node - right after restart:

[INFO] [04-27|05:54:56.642] Static peers                             len=0
[INFO] [04-27|05:54:56.643] [Sentinel] Sentinel started              app=caplin
[WARN] [04-27|05:59:40.954] [dbg] epochDuration                      beaconCfg.SlotsPerEpoch=16 beaconCfg.SecondsPerSlot=5
panic: non-positive interval for NewTicker

goroutine 27808 [running]:
time.NewTicker(0x0?)
	time/tick.go:22 +0xe5
github.com/hashicorp/golang-lru/v2/expirable.NewLRU[...].func1()
	github.com/hashicorp/golang-lru/v2@v2.0.7/expirable/expirable_lru.go:83 +0x71
created by github.com/hashicorp/golang-lru/v2/expirable.NewLRU[...] in goroutine 23435
	github.com/hashicorp/golang-lru/v2@v2.0.7/expirable/expirable_lru.go:82 +0x32a
exit status 2

seems it comes from:
epochDuration := beaconCfg.SlotsPerEpoch * beaconCfg.SecondsPerSlot
validatorAttestationSeen: lru.NewWithTTL[uint64, uint64]("validator_attestation_seen", validatorAttestationCacheSize, time.Duration(epochDuration)),

probably need change to:

epochDuration := time.Duration(beaconCfg.SlotsPerEpoch*beaconCfg.SecondsPerSlot) * time.Second