chore(deps): update dependency com_github_bazelbuild_buildtools to v6.4.0

Author: renovate-bot

non_module_dev_deps.bzl

@@ -66,12 +66,12 @@ def repositories(*, bzlmod):
     # no modules are provided at the moment for buildifier
     http_archive(
         name = "com_github_bazelbuild_buildtools",
-        sha256 = "42968f9134ba2c75c03bb271bd7bb062afb7da449f9b913c96e5be4ce890030a",
+        sha256 = "05c3c3602d25aeda1e9dbc91d3b66e624c1f9fdadf273e5480b489e744ca7269",
         # fix runner.bash.template always returning success, format MODULE.bazel and WORKSPACE.bzlmod too
         patches = ["@rules_haskell//buildifier:buildifier_test-workspace.patch"],
         patch_args = ["-p1"],
-        strip_prefix = "buildtools-6.3.3",
-        urls = ["https://github.com/bazelbuild/buildtools/archive/v6.3.3.tar.gz"],
+        strip_prefix = "buildtools-6.4.0",
+        urls = ["https://github.com/bazelbuild/buildtools/archive/v6.4.0.tar.gz"],
     )
 
     nixpkgs_local_repository(

rules_haskell_tests/non_module_deps.bzl

@@ -65,12 +65,12 @@ def repositories(*, bzlmod):
     # no modules are provided at the moment for buildifier
     http_archive(
         name = "com_github_bazelbuild_buildtools",
-        sha256 = "42968f9134ba2c75c03bb271bd7bb062afb7da449f9b913c96e5be4ce890030a",
+        sha256 = "05c3c3602d25aeda1e9dbc91d3b66e624c1f9fdadf273e5480b489e744ca7269",
         # fix runner.bash.template always returning success, format MODULE.bazel and WORKSPACE.bzlmod too
         patches = ["@rules_haskell//buildifier:buildifier_test-workspace.patch"],
         patch_args = ["-p1"],
-        strip_prefix = "buildtools-6.3.3",
-        urls = ["https://github.com/bazelbuild/buildtools/archive/v6.3.3.tar.gz"],
+        strip_prefix = "buildtools-6.4.0",
+        urls = ["https://github.com/bazelbuild/buildtools/archive/v6.4.0.tar.gz"],
     )
 
     http_archive(