🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Author: gcf-owl-bot[bot]

handwritten/bigtable/protos/google/bigtable/v2/data.proto

@@ -1,4 +1,4 @@
-// Copyright 2025 Google LLC
+// Copyright 2026 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -255,6 +255,15 @@ message ValueRange {
   }
 }
 
+// Restricts the output to cells whose values match the given bitmask.
+message ValueBitmask {
+  // Required. Mask applied to the value.
+  // Evaluated as: `(value & mask) == mask`
+  // The mask length must exactly match the value length, otherwise the cell is
+  // not considered a match.
+  bytes mask = 1 [(google.api.field_behavior) = REQUIRED];
+}
+
 // Takes a row as input and produces an alternate view of the row based on
 // specified rules. For example, a RowFilter might trim down a row to include
 // just the cells from columns matching a given regular expression, or might
@@ -514,6 +523,12 @@ message RowFilter {
     // will be applied to separate copies of the input. This may be relaxed in
     // the future.
     string apply_label_transformer = 19;
+
+    // Matches only cells with values that satisfy the condition `(value & mask)
+    // == mask`.
+    // The mask length must exactly match the value length, otherwise the cell
+    // is not considered a match.
+    ValueBitmask value_bitmask_filter = 20;
   }
 }