Upgrade Go bindings for FoundationDB in the sample data loader app

Upgrades the Go bindings in the data-loader sample app, and make sure
that opened database connection is closed (by calling Close()).

Author: hsson

sample-apps/data-loader/go.mod

@@ -1,6 +1,6 @@
 module github.com/FoundationDB/fdb-data-loader
 
-go 1.24.0
+go 1.25.0
 
-// Binding version for 7.1.67
-require github.com/apple/foundationdb/bindings/go v0.0.0-20250115161953-f1ab8147ed1c
+// Binding version for 7.3.63
+require github.com/apple/foundationdb/bindings/go v0.0.0-20250221231555-5140696da2df

sample-apps/data-loader/go.sum

@@ -1,2 +1,4 @@
 github.com/apple/foundationdb/bindings/go v0.0.0-20250115161953-f1ab8147ed1c h1:Nnun3T50beIpO6YKDZInHuZMgnNtYJafSlQAvkXwOWc=
 github.com/apple/foundationdb/bindings/go v0.0.0-20250115161953-f1ab8147ed1c/go.mod h1:OMVSB21p9+xQUIqlGizHPZfjK+SHws1ht+ZytVDoz9U=
+github.com/apple/foundationdb/bindings/go v0.0.0-20250221231555-5140696da2df h1:XlE/l8moueBRTJr7xt0/9f0HJ1FaLupzguIKoj0a74g=
+github.com/apple/foundationdb/bindings/go v0.0.0-20250221231555-5140696da2df/go.mod h1:OMVSB21p9+xQUIqlGizHPZfjK+SHws1ht+ZytVDoz9U=

sample-apps/data-loader/main.go

@@ -44,6 +44,7 @@ func loadData(ctx context.Context, keys int, batchSize int, valueSize int, clust
 	if err != nil {
 		log.Fatalf("could not open database: %s", err)
 	}
+	defer db.Close()
 
 	err = db.Options().SetTransactionTimeout(10 * time.Second.Milliseconds())
 	if err != nil {
@@ -79,7 +80,6 @@ func loadData(ctx context.Context, keys int, batchSize int, valueSize int, clust
 
 				return nil, nil
 			})
-
 			if err != nil {
 				log.Printf("could not write data: %s\n", err)
 			}