chore: update golangci-lint configuration

[tenthirtyam]

Summary of Pull Request

Updates golangci-lint configuration.

Type of Pull Request

• This is a bug fix.
• This is an enhancement or feature.
• This is a code style/formatting update.
• This is a documentation update.
• This is a refactoring update.
• This is a chore update
• This is something else.
  Please describe:

Related to Existing Issues

Test and Documentation Coverage

For bug fixes or features:

• Tests have been completed.
• Documentation has been added/updated.

BEFORE:

➜ golangci-lint run
WARN [config_reader] The configuration option `linters.errcheck.ignore` is deprecated, please use `linters.errcheck.exclude-functions`. 

AFTER:

➜ golangci-lint run
nsxt/metadata/metadata.go:187:10: Error return value of `d.Set` is not checked (errcheck)
                                d.Set(key, nestedVal)
                                     ^
nsxt/metadata/metadata.go:205:10: Error return value of `d.Set` is not checked (errcheck)
                                d.Set(key, nestedSlice)
                                     ^
nsxt/metadata/metadata.go:215:11: Error return value of `d.Set` is not checked (errcheck)
                                        d.Set(key, nestedSlice.Interface())
                                             ^
nsxt/provider.go:1192:17: Error return value is not checked (errcheck)
                initNSXVersion(connector)
                              ^
nsxt/removed_resource_wrapper.go:14:16: Error return value is not checked (errcheck)
        initNSXVersion(getPolicyConnector(m))
                      ^
nsxt/resource_nsxt_compute_manager.go:388:29: Error return value is not checked (errcheck)
        setCredentialValuesInSchema(d, obj.Credential)
                                   ^
nsxt/resource_nsxt_upgrade_run.go:469:37: Error return value of `upgradeClientSet.PlanClient.Pause` is not checked (errcheck)
                        upgradeClientSet.PlanClient.Pause()
                                                         ^
nsxt/resource_nsxt_upgrade_run.go:867:42: Error return value of `upgradeClient.Executepostupgradechecks` is not checked (errcheck)
                        upgradeClient.Executepostupgradechecks(component)
                                                              ^
nsxt/provider.go:721:46: G402: TLS InsecureSkipVerify set true. (gosec)
        tlsConfig := tls.Config{InsecureSkipVerify: insecure}
                                                    ^
nsxt/provider.go:1133:17: G404: Use of weak random number generator (math/rand or math/rand/v2 instead of crypto/rand) (gosec)
                        interval := (rand.Intn(max-min) + min)
                                     ^
nsxt/resource_nsxt_manager_cluster.go:273:16: G404: Use of weak random number generator (math/rand or math/rand/v2 instead of crypto/rand) (gosec)
                interval := (rand.Intn(max-min) + min)
                             ^
nsxt/provider_test.go:161:52: G402: TLS InsecureSkipVerify set true. (gosec)
                TLSClientConfig: &tls.Config{InsecureSkipVerify: insecure},
                                                                 ^
nsxt/utils_test.go:79:53: G404: Use of weak random number generator (math/rand or math/rand/v2 instead of crypto/rand) (gosec)
        return fmt.Sprintf("%s-%d", testAccDataSourceName, rand.Intn(100000))
                                                           ^
nsxt/provider.go:1146:97: G115: integer overflow conversion int -> uint (gosec)
                connectorOptions = append(connectorOptions, client.WithDecorators(retry.NewRetryDecorator(uint(c.CommonConfig.MaxRetries), retryFunc)))
                                                                                                              ^
nsxt/resource_nsxt_lb_client_ssl_profile.go:149:19: G115: integer overflow conversion int -> int32 (gosec)
        revision := int32(d.Get("revision").(int))
                         ^
nsxt/resource_nsxt_lb_cookie_persistence_profile.go:260:19: G115: integer overflow conversion int -> int32 (gosec)
        revision := int32(d.Get("revision").(int))
                         ^
nsxt/resource_nsxt_lb_fast_tcp_application_profile.go:142:19: G115: integer overflow conversion int -> int32 (gosec)
        revision := int32(d.Get("revision").(int))
                         ^
nsxt/resource_nsxt_logical_router_downlink_port.go:86:22: G115: integer overflow conversion uint64 -> int64 (gosec)
                PrefixLength: int64(prefix),
                                   ^
nsxt/validators.go:22:13: G115: integer overflow conversion int -> uint64 (gosec)
                i = uint64(vi)
                          ^

Breaking Changes?

• Yes, there are breaking changes.
• No, there are no breaking changes.

[tenthirtyam]

@vmware/terraform-provider-nsxt-maintainers: reminder.