chore(deps): update com_grail_bazel_toolchain digest to 853de70 (#103)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

WORKSPACE.bazel

@@ -15,9 +15,9 @@ hedron_compile_commands_setup()
 
 http_archive(
     name = "com_grail_bazel_toolchain",
-    sha256 = "914eb353744a91cd5c8256d16583c4a0844a7c1fa411e1f8fb2847567f50741d",
-    strip_prefix = "bazel-toolchain-1d58ed6bd43de852652c5665f73da133a2a72487",
-    url = "https://github.com/grailbio/bazel-toolchain/archive/1d58ed6bd43de852652c5665f73da133a2a72487.zip",
+    sha256 = "54b2722feb53bf8325a196de32a873f002fc143d7339cc4953a92f542974d06b",
+    strip_prefix = "bazel-toolchain-853de704a910cd0e7dd217207487c9d74c8d62e2",
+    url = "https://github.com/grailbio/bazel-toolchain/archive/853de704a910cd0e7dd217207487c9d74c8d62e2.zip",
 )
 
 load("@com_grail_bazel_toolchain//toolchain:deps.bzl", "bazel_toolchain_dependencies")