test: resolve remaining linter errors on build

.golangci.yml

@@ -0,0 +1,8 @@
+issues:
+  exclude-rules:
+    # these operations are deprecated, and we properly parse the replacement message type, but
+    # support remains for the deprecated form of encoding
+    - path: mongo/operations.go
+      text: "SA1019: wiremessage.ReadQuery"
+    - path: mongo/operations.go
+      text: "SA1019: wiremessage.OpQuery"

proxy/proxy_test.go

@@ -108,7 +108,7 @@ func TestProxyUnacknowledgedWrites(t *testing.T) {
 
 	// Create two *Collection instances: one for setup and basic operations and and one configured with an
 	// unacknowledged write concern for testing.
-	wc := writeconcern.New(writeconcern.W(0))
+	wc := writeconcern.Unacknowledged()
 	setupCollection := client.Database("test").Collection("test_proxy_unacknowledged_writes")
 	unackCollection, err := setupCollection.Clone(options.Collection().SetWriteConcern(wc))
 	assert.Nil(t, err)