ci: also run on master

Author: gjasny

.github/workflows/bazel-ci.yml

@@ -1,5 +1,8 @@
 name: Bazel CI
 on:
+  push:
+    branches:
+      - master
   pull_request:
     branches:
       - master

.github/workflows/cmake-ci.yml

@@ -1,5 +1,8 @@
 name: CMake CI
 on:
+  push:
+    branches:
+      - master
   pull_request:
     branches:
       - master

.github/workflows/coverage.yml

@@ -1,5 +1,8 @@
 name: Coverage
 on:
+  push:
+    branches:
+      - master
   pull_request:
     branches:
       - master

.github/workflows/linting.yml

@@ -1,5 +1,8 @@
 name: Linting
 on:
+  push:
+    branches:
+      - master
   pull_request:
     branches:
       - master