ci: run on all branches

 .github/workflows/ci_build.yml          | 8 +-------
 .github/workflows/ci_build_xwayland.yml | 8 +-------
 2 files changed, 2 insertions(+), 14 deletions(-)

diff --git a/.github/workflows/ci_build.yml b/.github/workflows/ci_build.yml
index e1311f8..83759fd 100644
--- a/.github/workflows/ci_build.yml
+++ b/.github/workflows/ci_build.yml
@@ -1,13 +1,7 @@
 # Build river and run the test suite every time a commit is pushed to master or
 # a pull request is opened against master.
 
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
+on: [push, pull_request]
 
 name: Archliunx
 
diff --git a/.github/workflows/ci_build_xwayland.yml b/.github/workflows/ci_build_xwayland.yml
index 6442f57..0c9ede5 100644
--- a/.github/workflows/ci_build_xwayland.yml
+++ b/.github/workflows/ci_build_xwayland.yml
@@ -1,13 +1,7 @@
 # Build river and run the test suite with xwayland enabled every time a commit
 # is pushed to master or a pull request is opened against master.
 
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
+on: [push, pull_request]
 
 name: Archliunx + Xwayland