rebase: Bump github.com/hashicorp/vault from 1.4.2 to 1.9.9

Bumps [github.com/hashicorp/vault](https://github.com/hashicorp/vault) from 1.4.2 to 1.9.9.
- [Release notes](https://github.com/hashicorp/vault/releases)
- [Changelog](https://github.com/hashicorp/vault/blob/main/CHANGELOG.md)
- [Commits](https://github.com/hashicorp/vault/compare/v1.4.2...v1.9.9)

---
updated-dependencies:
- dependency-name: github.com/hashicorp/vault
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/utilities/BUILD.bazel

@@ -8,6 +8,7 @@ go_library(
         "doc.go",
         "pattern.go",
         "readerfactory.go",
+        "string_array_flag.go",
         "trie.go",
     ],
     importpath = "github.com/grpc-ecosystem/grpc-gateway/v2/utilities",
@@ -16,7 +17,10 @@ go_library(
 go_test(
     name = "utilities_test",
     size = "small",
-    srcs = ["trie_test.go"],
+    srcs = [
+        "string_array_flag_test.go",
+        "trie_test.go",
+    ],
     deps = [":utilities"],
 )