Remove Bevy main tracking branch (#253)

* Remove `ci-cron.yml`

* Update `actions/checkout` from `v3` to `v4`

* Remove references to `bevy_main` branches

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: CI
 
 on:
   pull_request:
-    branches: [master, bevy-main]
+    branches: [master]
   push:
-    branches: [master, bevy-main]
+    branches: [master]
 
 env:
   CARGO_TERM_COLOR: always
@@ -18,7 +18,7 @@ jobs:
         os: [windows-latest, ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: dtolnay/rust-toolchain@master
         with:

.github/workflows/dependencies.yml

@@ -24,9 +24,9 @@ jobs:
   check-advisories:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
-          ref: bevy-main
+          ref: master
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
@@ -38,9 +38,9 @@ jobs:
   check-bans:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
-          ref: bevy-main
+          ref: master
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
@@ -52,9 +52,9 @@ jobs:
   check-licenses:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
-          ref: bevy-main
+          ref: master
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable
@@ -66,9 +66,9 @@ jobs:
   check-sources:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
-          ref: bevy-main
+          ref: master
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: stable

CONTRIBUTING.md

@@ -52,21 +52,6 @@ when contributing to `bevy_prototype_lyon`:
   of the changes you have made
   and why they are necessary.
 
-### Branches
-
-We maintain two long term branches,
-each with their characteristics.
-
-- `master`.
-  Tracks the latest Bevy release.
-  You should target this branch by default.
-- `bevy-main`.
-  Tracks the `main` branch of `bevy`.
-  You should target this branch
-  only if you have to accommodate a breaking change caused by Bevy,
-  or if you want to develop a feature
-  not yet supported by the latest release.
-
 ## Reporting Issues
 
 If you encounter any issues,