ci: run all workflows when PRing to non-main branches

Most of our GitHub Actions workflows are configured to only run on PRs
to `main`.

This sucks when you're basing changes on top of each other. Consider the
following example:

```
main <-- feat/my-feature <- feat/my-sub-feature
```

As configured now, CI will never run on `feat/my-sub-feature`.

It's useful to be able to break changes up into smaller PRs for review,
or to be able to sub-branch to avoid merge conflicts while you're
waiting for a review.

Author: ndhoule

.github/workflows/codeql.yml

@@ -5,13 +5,7 @@ on:
   push:
     branches:
       - main
-    paths-ignore:
-      - '**/*.test.js'
   pull_request:
-    branches:
-      - main
-    paths-ignore:
-      - '**/*.test.js'
   schedule:
     - cron: '0 0 * * 0'
   workflow_dispatch:

.github/workflows/e2e-tests.yml

@@ -5,7 +5,6 @@ on:
   push:
     branches: [main]
   pull_request:
-    branches: [main]
   schedule:
     # check daily to notice potential package manager issues
     - cron: '0 1 * * *' # At 01:00 daily

.github/workflows/integration-tests.yml

@@ -3,9 +3,9 @@ name: Integration Tests
 
 on:
   push:
-    branches: [main]
+    branches:
+      - main
   pull_request:
-    branches: [main]
 
 jobs:
   integration:

.github/workflows/unit-tests.yml

@@ -5,7 +5,6 @@ on:
   push:
     branches: [main]
   pull_request:
-    branches: [main]
 
 jobs:
   unit:

.github/workflows/vale.yml

@@ -5,7 +5,6 @@ on:
   push:
     branches: [main]
   pull_request:
-    branches: [main]
 
 permissions:
   checks: write

.github/workflows/verify-docs.yml

@@ -5,7 +5,6 @@ on:
   push:
     branches: [main]
   pull_request:
-    branches: [main]
 
 jobs:
   verify-docs: