[COMPLIANCE] Update Copyright and License Headers (#39)

Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>

Author: oss-core-libraries-dashboard[bot]

.github/dependabot.yaml

@@ -1,4 +1,4 @@
-# Copyright (c) HashiCorp, Inc.
+# Copyright IBM Corp. 2013, 2025
 # SPDX-License-Identifier: MPL-2.0
 
 version: 2