CI: add release-announcements.txt to ignored.

Author: jgm

.github/workflows/ci.yml

@@ -9,7 +9,8 @@ on:
     - 'MANUAL.txt'
     - '*.md'
     - '.cirrus.yml'
-    - 'RELEASE_CHECKLIST'
+    - 'RELEASE-CHECKLIST-TEMPLATE.org'
+    - 'release-announcements.txt'
     - 'BUGS'
     - 'README.template'
     - 'hie.yaml'
@@ -24,7 +25,8 @@ on:
     - 'doc/*.md'
     - 'MANUAL.txt'
     - '*.md'
-    - 'RELEASE_CHECKLIST'
+    - 'RELEASE-CHECKLIST-TEMPLATE.org'
+    - 'release-announcements.txt'
     - 'BUGS'
     - 'README.template'
     - 'hie.yaml'