ci: Add a monthly schedule for the pipeline

Author: theofidry

.github/workflows/coding-standards.yml

@@ -1,6 +1,11 @@
 name: "coding standards"
 
-on: ["pull_request", "push"]
+on:
+    pull_request: ~
+    push: ~
+    schedule:
+        # Do not make it the first of the month and/or midnight since it is a very busy time
+        - cron: "* 10 5 * *"
 
 jobs:
     coding-standards:

.github/workflows/static-analysis.yml

@@ -1,6 +1,11 @@
 name: "static analysis"
 
-on: ["pull_request", "push"]
+on:
+    pull_request: ~
+    push: ~
+    schedule:
+        # Do not make it the first of the month and/or midnight since it is a very busy time
+        - cron: "* 10 5 * *"
 
 jobs:
     static-analysis:

.github/workflows/unit-tests.yml

@@ -1,6 +1,11 @@
 name: "unit tests"
 
-on: [ "pull_request", "push" ]
+on:
+    pull_request: ~
+    push: ~
+    schedule:
+        # Do not make it the first of the month and/or midnight since it is a very busy time
+        - cron: "* 10 5 * *"
 
 jobs:
     tests: