Prep for Creation of 8.4 Branch (#2001)

* prepping for 8.4 branch

* adjusted schemas init file

* adjusted target matrix to only backport to 7.16, updated api schemas

* adjusted the lock-versions workflow to account for 7.16 and up support only

* Add test for version lock to schema map correlation

* decouple from static 7.13 references

* keep patch version for lock

* Update detection_rules/etc/packages.yml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
Co-authored-by: brokensound77 <brokensound77@users.noreply.github.com>

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

(selectively cherry picked from commit 35b1a69ff5)

.github/workflows/backport.yml

@@ -56,7 +56,7 @@ jobs:
       max-parallel: 1
       matrix:
         # 7.17 was intentionally skipped because it was added late and was bug fix only
-        target_branch: [7.13, 7.14, 7.15, 7.16, '8.0', 8.1, 8.2]
+        target_branch: [7.16, '8.0', 8.1, 8.2, 8.3]
 
     steps:
       - name: Checkout repo

.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: '7.13,7.14,7.15,7.16,8.0,8.1,8.2'
+          default: '7.16,8.0,8.1,8.2,8.3'
 
 jobs:
   pr: