fix(repo): repair GitHub issue forms

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -3,7 +3,9 @@ description: Report a problem with the validator app or core library.
 title: "[Bug] "
 body:
   - type: checkboxes
+    id: confirmations
     attributes:
+      label: Before you submit
       options:
         - label: I searched the existing issues first.
           required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -1,9 +1,6 @@
 blank_issues_enabled: false
 
 contact_links:
-  - name: Security vulnerability
-    url: https://github.com/Streamshapers/OGraf-Validator/security/advisories/new
-    about: Report security problems privately. Do not open a public issue.
   - name: OGraf v1 specification
     url: https://ograf.ebu.io/v1/specification/docs/Specification.html
     about: Check the official specification before reporting a compliance problem.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -3,7 +3,9 @@ description: Suggest an improvement to OGraf Validator.
 title: "[Feature] "
 body:
   - type: checkboxes
+    id: confirmations
     attributes:
+      label: Before you submit
       options:
         - label: I searched the existing issues first.
           required: true

.github/ISSUE_TEMPLATE/ograf_compatibility.yml

@@ -3,7 +3,9 @@ description: Report a package that behaves differently from the OGraf v1 specifi
 title: "[OGraf] "
 body:
   - type: checkboxes
+    id: confirmations
     attributes:
+      label: Before you submit
       options:
         - label: I checked the current OGraf v1 specification.
           required: true