[ci skip] Github: Update app bug report OS list

Author: JordanTheToaster

.github/ISSUE_TEMPLATE/app_bug_report.yaml

@@ -70,6 +70,8 @@ body:
       - Windows 11
       - Windows 10 (64bit)
       - Linux (64bit) - Specify distro below
+      - macOS 26 (Tahoe)
+      - macOS 15 (Sequoia)
       - macOS 14 (Sonoma)
       - macOS 13 (Ventura)
       - macOS 12 (Monterey)