revert: use $default-branch placeholder instead of hard-coded main (#482)

Author: huxuan

.github/workflows/ci.yml

@@ -54,4 +54,4 @@ on:
       - synchronize
   push:
     branches:
-      - $default-branch
+      - main

.github/workflows/commitlint.yml

@@ -25,4 +25,4 @@ on:
       - edited
   push:
     branches:
-      - $default-branch
+      - main

.github/workflows/devcontainer.yml

@@ -40,7 +40,7 @@ jobs:
 on:
   push:
     branches:
-      - $default-branch
+      - main
     paths:
       - .devcontainer/Dockerfile
       - .devcontainer/Dockerfile.dockerignore

template/[% if repo_host_type == 'github.com' %].github[% endif %]/workflows/ci.yml.jinja

@@ -67,4 +67,4 @@ on:
       - synchronize
   push:
     branches:
-      - $default-branch
+      - main

template/[% if repo_host_type == 'github.com' %].github[% endif %]/workflows/commitlint.yml

@@ -25,4 +25,4 @@ on:
       - edited
   push:
     branches:
-      - $default-branch
+      - main

template/[% if repo_host_type == 'github.com' %].github[% endif %]/workflows/devcontainer.yml.jinja

@@ -51,7 +51,7 @@ jobs:
 on:
   push:
     branches:
-      - $default-branch
+      - main
     paths:
       - .devcontainer/Dockerfile
       - .devcontainer/Dockerfile.dockerignore