Bump longhorn-manager and harvester version

[brandboat]

related to harvester/harvester#5524

Description

• Bump longhorn-manager to v1.6.0
• Bump longhorn-manager to v1.3.0
• Remove redundant replace rule

Test Plan

Setup: Create a Harvester cluster
Build terraform-harvester-provider

1. execute make
2. follow https://developer.hashicorp.com/terraform/cli/config/config-file#development-overrides-for-provider-developers to use terraform-harvester-provider from local build.

   provider_installation {
     dev_overrides {
       "harvester/harvester" = "/home/brandboat/Code/harvester/terraform-provider-harvester/bin"
     }
     direct {}
   }
   

3. Add export TF_CLI_CONFIG_FILE=~/.terraformrc to .bashrc
4. Test terraform create VM https://gist.github.com/brandboat/5a5279d9c13604d2465da3ce0b277743
5. Run terraform apply

Check vm create successfully.

[bk201]

LGTM

[FrankYang0529]

LGTM. Thanks.