Update dependencies

Among others, this updates minio-go, so that the new "eu-west-3" zone
for AWS is supported.

vendor/cloud.google.com/go/firestore/internal/Makefile

@@ -2,9 +2,15 @@
 
 SHELL=/bin/bash
 
-../doc.go: doc-snippets.go doc.template snipdoc.awk
+../doc.go: build doc-snippets.go doc.template snipdoc.awk
 	@tmp=$$(mktemp) && \
 	awk -f snipdoc.awk doc-snippets.go doc.template > $$tmp && \
-	chmod +w ../doc.go && \
-	mv $$tmp ../doc.go && \
-	chmod -w ../doc.go
+	chmod +w $@ && \
+	mv $$tmp $@ && \
+	chmod -w $@
+	@echo "wrote $@"
+
+.PHONY: build
+
+build:
+	go build doc-snippets.go

vendor/cloud.google.com/go/firestore/internal/doc-snippets.go

@@ -89,6 +89,10 @@ func f1() {
 	})
 	//]
 
+	//[ docref.Update
+	_, err = ca.Update(ctx, []firestore.Update{{Path: "capital", Value: "Sacramento"}})
+	//]
+
 	//[ docref.Delete
 	_, err = ny.Delete(ctx)
 	//]
@@ -98,21 +102,15 @@ func f1() {
 	if err != nil {
 		// TODO: Handle error.
 	}
-	_, err = ca.UpdateStruct(ctx, []string{"capital"}, State{Capital: "Sacramento"},
+	_, err = ca.Update(ctx,
+		[]firestore.Update{{Path: "capital", Value: "Sacramento"}},
 		firestore.LastUpdateTime(docsnap.UpdateTime))
 	//]
 
-	//[ docref.UpdateMap
-	_, err = ca.UpdateMap(ctx, map[string]interface{}{"pop": 39.2})
-	//]
-	//[ docref.UpdateStruct
-	_, err = ca.UpdateStruct(ctx, []string{"pop"}, State{Population: 39.2})
-	//]
-
 	//[ WriteBatch
 	writeResults, err := client.Batch().
 		Create(ny, State{Capital: "Albany"}).
-		UpdateStruct(ca, []string{"capital"}, State{Capital: "Sacramento"}).
+		Update(ca, []firestore.Update{{Path: "capital", Value: "Sacramento"}}).
 		Delete(client.Doc("States/WestDakota")).
 		Commit(ctx)
 	//]
@@ -154,8 +152,7 @@ func txn() {
 		if err != nil {
 			return err
 		}
-		return tx.UpdateStruct(ny, []string{"pop"},
-			State{Population: pop.(float64) + 0.2})
+		return tx.Update(ny, []firestore.Update{{Path: "pop", Value: pop.(float64) + 0.2}})
 	})
 	if err != nil {
 		// TODO: Handle error.

vendor/cloud.google.com/go/firestore/internal/doc.template

@@ -16,7 +16,7 @@
 
 /*
 Package firestore provides a client for reading and writing to a Cloud Firestore
-database. 
+database.
 
 See https://cloud.google.com/firestore/docs for an introduction
 to Cloud Firestore and additional help on using the Firestore API.
@@ -80,16 +80,10 @@ document or creates a new one.
 
 [docref.Set]
 
-To update some fields of an existing document, use UpdateMap, UpdateStruct or
-UpdatePaths. For UpdateMap, the keys of the map specify which fields to change. The
-others are untouched.
+To update some fields of an existing document, use Update. It takes a list of
+paths to update and their corresponding values.
 
-[docref.UpdateMap]
-
-For UpdateStruct, you must explicitly provide the fields to update. The field names
-must match exactly.
-
-[docref.UpdateStruct]
+[docref.Update]
 
 Use DocumentRef.Delete to delete a document.