Update dependencies

vendor/github.com/googleapis/gax-go/v2/.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-    "v2": "2.12.0"
+    "v2": "2.12.1"
 }

vendor/github.com/googleapis/gax-go/v2/CHANGES.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.12.1](https://github.com/googleapis/gax-go/compare/v2.12.0...v2.12.1) (2024-02-13)
+
+
+### Bug Fixes
+
+* add XGoogFieldMaskHeader constant ([#321](https://github.com/googleapis/gax-go/issues/321)) ([666ee08](https://github.com/googleapis/gax-go/commit/666ee08931041b7fed56bed7132649785b2d3dfe))
+
 ## [2.12.0](https://github.com/googleapis/gax-go/compare/v2.11.0...v2.12.0) (2023-06-26)
 
 

vendor/github.com/googleapis/gax-go/v2/callctx/callctx.go

@@ -38,6 +38,14 @@ import (
 )
 
 const (
+	// XGoogFieldMaskHeader is the canonical header key for the [System Parameter]
+	// that specifies the response read mask. The value(s) for this header
+	// must adhere to format described in [fieldmaskpb].
+	//
+	// [System Parameter]: https://cloud.google.com/apis/docs/system-parameters
+	// [fieldmaskpb]: https://google.golang.org/protobuf/types/known/fieldmaskpb
+	XGoogFieldMaskHeader = "x-goog-fieldmask"
+
 	headerKey = contextKey("header")
 )
 

vendor/github.com/googleapis/gax-go/v2/header.go

@@ -103,7 +103,9 @@ func goVersion() string {
 	return "UNKNOWN"
 }
 
-// XGoogHeader is for use by the Google Cloud Libraries only.
+// XGoogHeader is for use by the Google Cloud Libraries only. See package
+// [github.com/googleapis/gax-go/v2/callctx] for help setting/retrieving
+// request/response headers.
 //
 // XGoogHeader formats key-value pairs.
 // The resulting string is suitable for x-goog-api-client header.
@@ -125,7 +127,8 @@ func XGoogHeader(keyval ...string) string {
 }
 
 // InsertMetadataIntoOutgoingContext is for use by the Google Cloud Libraries
-// only.
+// only. See package [github.com/googleapis/gax-go/v2/callctx] for help
+// setting/retrieving request/response headers.
 //
 // InsertMetadataIntoOutgoingContext returns a new context that merges the
 // provided keyvals metadata pairs with any existing metadata/headers in the
@@ -137,7 +140,9 @@ func InsertMetadataIntoOutgoingContext(ctx context.Context, keyvals ...string) c
 	return metadata.NewOutgoingContext(ctx, insertMetadata(ctx, keyvals...))
 }
 
-// BuildHeaders is for use by the Google Cloud Libraries only.
+// BuildHeaders is for use by the Google Cloud Libraries only. See package
+// [github.com/googleapis/gax-go/v2/callctx] for help setting/retrieving
+// request/response headers.
 //
 // BuildHeaders returns a new http.Header that merges the provided
 // keyvals header pairs with any existing metadata/headers in the provided

vendor/github.com/googleapis/gax-go/v2/internal/version.go

@@ -30,4 +30,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "2.12.0"
+const Version = "2.12.1"