Update dependency io_bazel_rules_go to v0.56.1

Author: renovate[bot]

tests/WORKSPACE

@@ -247,10 +247,10 @@ http_archive(
 
 http_archive(
     name = "io_bazel_rules_go",
-    sha256 = "f4a9314518ca6acfa16cc4ab43b0b8ce1e4ea64b81c38d8a3772883f153346b8",
+    sha256 = "89d2050410602142c9acafd01c95baf48b65f8dd16f4771d37c89f82f5e147f2",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.50.1/rules_go-v0.50.1.zip",
-        "https://github.com/bazelbuild/rules_go/releases/download/v0.50.1/rules_go-v0.50.1.zip",
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.56.1/rules_go-v0.56.1.zip",
+        "https://github.com/bazelbuild/rules_go/releases/download/v0.56.1/rules_go-v0.56.1.zip",
     ],
 )