Add lukeheath to engineering handbook auto approvals (#12115)

I want to add myself to Engineering DRIs so I can iterate faster on the
engineering handbook.

---------

Co-authored-by: Mike McNeil <mikermcneil@users.noreply.github.com>

handbook/engineering/README.md

@@ -83,7 +83,7 @@ For each attendee:
 - What could have gone better this release cycle?
 - What should we remember next time?
 
-### Group Weeklies
+### Group weeklies
 
 A chance for deeper, synchronous discussion on topics relevant to that group. Held weekly for 30 minutes - one hour.
 
@@ -965,5 +965,5 @@ The following [Slack channels are maintained](https://fleetdm.com/handbook/compa
 | `#help-qa`               | Reed Haynes                                                      |
 | `#_pov-environments`     | Ben Edwards                                                      |
 
-<meta name="maintainedBy" value="zwass">
+<meta name="maintainedBy" value="lukeheath">
 <meta name="title" value="🚀 Engineering">

website/config/custom.js

@@ -115,11 +115,11 @@ module.exports.custom = {
 
     'handbook': ['mike-j-thomas', 'eashaw', 'mikermcneil', 'zwass'],// (default for handbook)
     'handbook/company': 'mikermcneil',
-    'handbook/business-operations': ['hollidayn', 'mikermcneil'],
-    'handbook/engineering': 'zwass',
+    'handbook/business-operations': ['jostableford','hollidayn', 'mikermcneil'],
+    'handbook/engineering': ['zwass', 'lukeheath'],
     'handbook/product': ['noahtalerman', 'zhumo'],
     'handbook/customers': ['alexmitchelliii','zayhanlon','dherder'],
-    'handbook/marketing': ['jarodreyes', 'mike-j-thomas'],
+    'handbook/marketing': ['jarodreyes', 'mike-j-thomas', 'spokanemac'],
 
     'website': 'mikermcneil',// (default for website)
     'website/views': 'eashaw',