chore: update to latest version of Aspect CLI and turn on additional workflows features

.aspect/workflows/config.yaml

diff --git a/.aspect/workflows/config.yaml b/.aspect/workflows/config.yaml
index 993f14f..0db08c9 100644
--- a/.aspect/workflows/config.yaml
+++ b/.aspect/workflows/config.yaml
@@ -2,9 +2,19 @@
 env:
   CC: /bin/false
 workspaces:
-  - .
-  - e2e/bzlmod
-  - e2e/copy_to_directory
+  .:
+    icon: js
+    label: bazel-lib
+  e2e/bzlmod:
+    icon: bazel
+    tasks:
+      buildifier:
+        without: true
+  e2e/copy_to_directory:
+    icon: bazel
+    tasks:
+      buildifier:
+        without: true
 tasks:
-  branch_freshness:
+  buildifier:
   test:

.bazeliskrc

diff --git a/.bazeliskrc b/.bazeliskrc
index 333e459..d0fc2ec 100644
--- a/.bazeliskrc
+++ b/.bazeliskrc
@@ -1,2 +1,2 @@
 BAZELISK_BASE_URL=https://github.com/aspect-build/aspect-cli/releases/download
-USE_BAZEL_VERSION=aspect/5.2.1
+USE_BAZEL_VERSION=aspect/5.3.4

BUILD.bazel

diff --git a/BUILD.bazel b/BUILD.bazel
index 6de2045..78df84b 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -1,6 +1,7 @@
 load("@aspect_bazel_lib_host//:defs.bzl", "host")
 load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
 load("@bazel_gazelle//:def.bzl", "DEFAULT_LANGUAGES", "gazelle", "gazelle_binary")
+load("@buildifier_prebuilt//:rules.bzl", "buildifier")
 load("//lib:write_source_files.bzl", "write_source_files")
 load("//lib:yq.bzl", "yq")
 load("//lib:diff_test.bzl", "diff_test")
@@ -92,3 +93,19 @@
     actual = ".bazelversion",
     expected = str(host.bazel_version),
 )
+
+bzl_library(
+    name = "deps",
+    srcs = ["deps.bzl"],
+    visibility = ["//visibility:public"],
+    deps = ["@bazel_gazelle//:deps"],
+)
+
+buildifier(
+    name = "buildifier.check",
+    exclude_patterns = [
+        "./.git/*",
+    ],
+    lint_mode = "warn",
+    mode = "diff",
+)

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 24f8fb2..f527a91 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -46,3 +46,13 @@
 go_register_toolchains(version = "1.18.3")
 
 gazelle_dependencies()
+
+############################################
+# Buildifier, for formatting BUILD and bzl files
+load("@buildifier_prebuilt//:deps.bzl", "buildifier_prebuilt_deps")
+
+buildifier_prebuilt_deps()
+
+load("@buildifier_prebuilt//:defs.bzl", "buildifier_prebuilt_register_toolchains")
+
+buildifier_prebuilt_register_toolchains()

internal_deps.bzl

diff --git a/internal_deps.bzl b/internal_deps.bzl
index 02eb652..7cf586d 100644
--- a/internal_deps.bzl
+++ b/internal_deps.bzl
@@ -53,6 +53,15 @@
         ],
     )
 
+    http_archive(
+        name = "buildifier_prebuilt",
+        sha256 = "95387c9dded7f8e3bdd4c598bc2ca4fbb6366cb214fa52e7d7b689eb2f421e01",
+        strip_prefix = "buildifier-prebuilt-6.0.0",
+        urls = [
+            "https://github.com/keith/buildifier-prebuilt/archive/6.0.0.tar.gz",
+        ],
+    )
+
     # Register toolchains for tests
     register_jq_toolchains()
     register_yq_toolchains()