[FR] 8.11 Release Preparation and Update Main Branch to 8.12 (#3182)

* prepping for 8.12 branch

* added ananlytic manifests and schemas

* fix linting issues

* updated analytic package manifests and schemas

Removed changes from:
- detection_rules/etc/packages.yml

(selectively cherry picked from commit b4f8fc3290)

.github/workflows/lock-versions.yml

@@ -6,7 +6,7 @@ on:
           description: 'List of branches to lock versions (ordered, comma separated)'
           required: true
           # 7.17 was intentionally skipped because it was added late and was bug fix only
-          default: '8.3,8.4,8.5,8.6,8.7,8.8,8.9,8.10'
+          default: '8.3,8.4,8.5,8.6,8.7,8.8,8.9,8.10,8.11'
 
 jobs:
   pr: