In this article: https://documentation.meraki.com/MX/Site-to-site_VPN/Configuring_Site_to_Site_VPN_tunnels_to_Azure_V...
you see Meraki choosing a IPsec policy preset called 'Azure'. This policy does a Phase 2 Lifetime of 3600.
In this article: https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-about-vpn-devices
at 'IKE Phase 2 (Quick Mode) parameters' you see Azure doing a RouteBased Phase 2 Lifetime of 27000. IPsec policy's are not editable in Azure.
Either the Meraki article or the IPsec template which you select in the Meraki device is incorrect (Phase 2 Lifetime should be 27000 on Meraki's side instead of 3600).
Note: Azure does not support PolicyBased in combination with Meraki so PolicyBased settings are not applicable (see 'Validated VPN devices and device configuration guides' in the Azure article).