chore: add comment in CODEOWNERS about how to update it

Depends on zegl/rules_codeowners#27

.github/BUILD.bazel

@@ -3,6 +3,7 @@ load("@rules_codeowners//tools:codeowners.bzl", "generate_codeowners")
 
 generate_codeowners(
     name = "gen_codeowners",
+    generated_comment = "# AUTO GENERATED edits will be lost\n# To update, run:\n#    yarn update-codeowners",
     # This list is auto-generated by `yarn update-codeowners`
     # do not sort
     owners = [

.github/CODEOWNERS

@@ -1,5 +1,6 @@
-# This file was generated by rules_codeowners / Bazel
-# Don't edit it directly
+# AUTO GENERATED edits will be lost
+# To update, run:
+#    yarn update-codeowners
 
 * @mattem @gregmagolan @soldair @alexeagle
 /packages/labs/** @mrmeku @alexeagle @mattem

package.bzl

@@ -98,11 +98,11 @@ def rules_nodejs_dev_dependencies():
 
     http_archive(
         name = "rules_codeowners",
-        strip_prefix = "rules_codeowners-826b742ee0d6703736c8c4f45fd07d65315cf599",
-        sha256 = "64f64459b41201f7236880763e72de9384b237dfc44d61949520a2994bff18cd",
+        patches = ["@build_bazel_rules_nodejs//:rules_codeowners_pr27.patch"],
+        strip_prefix = "rules_codeowners-bdc2f987cd0e15ebfa9b76689a4c9a472730a6f0",
+        sha256 = "efd4aba15e25de49e9e68b1517d789c53104b2cf0b05212ce206ed0d44835952",
         urls = [
-            "https://mirror.bazel.build/github.com/zegl/rules_codeowners/archive/826b742ee0d6703736c8c4f45fd07d65315cf599.zip",
-            "https://github.com/zegl/rules_codeowners/archive/826b742ee0d6703736c8c4f45fd07d65315cf599.zip",
+            "https://github.com/zegl/rules_codeowners/archive/bdc2f987cd0e15ebfa9b76689a4c9a472730a6f0.zip",
         ],
     )
 

rules_codeowners_pr27.patch

@@ -0,0 +1,31 @@
+diff tools/codeowners.bzl tools/codeowners.bzl
+index e6387a3..93a8cdd 100644
+--- tools/codeowners.bzl
++++ tools/codeowners.bzl
+@@ -98,8 +98,7 @@ skip_empty_rows () {
+     grep -v -E '^$'
+ }
+
+-echo "# This file was generated by rules_codeowners / Bazel" >> "$OUTFILE"
+-echo "# Don't edit it directly" >> "$OUTFILE"
++echo "_GENERATED_COMMENT_" >> "$OUTFILE"
+ echo "" >> "$OUTFILE"
+
+ while [ "$#" -gt 0 ]; do
+@@ -113,7 +112,7 @@ while [ "$#" -gt 0 ]; do
+         skip_empty_rows | \
+         prevent_malicios_input "$must_have_prefix" >> "$OUTFILE"
+ done
+-        """,
++        """.replace("_GENERATED_COMMENT_", ctx.attr.generated_comment),
+     )
+
+ generate_codeowners = rule(
+@@ -122,6 +121,7 @@ generate_codeowners = rule(
+ Creates a GitHub-compatible CODEOWNERS file based on the `owners`.
+ """,
+     attrs = {
++        "generated_comment": attr.string(default = "# This file was generated by rules_codeowners / Bazel\n# Don't edit it directly"),
+         "owners": attr.label_list(mandatory = True, doc = "A list of codeowners and generate_codeowners. One generate_codeowners can include another generate_codeonwers to effective acheive nested rules."),
+     },
+     outputs = {