fix: Run CI only once on push

Signed-off-by: Mateus Oliveira <msouzaol@redhat.com>

.github/workflows/build-docs.yml

@@ -3,6 +3,8 @@ on:
   push:
     branches:
       - master
+    paths:
+      - 'docs/en/docs/release-notes.md'
   pull_request:
     types:
       - opened

.github/workflows/test.yml

@@ -4,6 +4,8 @@ on:
   push:
     branches:
       - master
+    paths:
+      - 'docs/en/docs/release-notes.md'
   pull_request:
     types:
       - opened