fix: initialize GlobalLabels to empty slice to prevent seid parse failure

seid fails with "failed to parse global-labels config" when the field
is nil, which the TOML encoder serializes in a way the binary cannot
parse. Initializing to [][]string{} produces valid empty TOML output.

Author: bdchatham

defaults.go

@@ -200,6 +200,7 @@ func baseDefaults() *SeiConfig {
 			MaxOpenConnections:      3,
 			Namespace:               "tendermint",
 			PrometheusRetentionTime: 7200,
+			GlobalLabels:            [][]string{},
 		},
 
 		Logging: LogConfig{

version.json

@@ -1,3 +1,3 @@
 {
-  "version": "v0.0.2"
+  "version": "v0.0.3"
 }