ci: Push on main branch only

Author: kkrypt0nn

.github/workflows/ci.yml

@@ -1,47 +1,22 @@
 name: spaceflake.rs CI (Lint & Test)
 
-on: [ push, pull_request ]
-
-permissions:
-  contents: read
+on:
+  push:
+    branches:
+      - main
 
 jobs:
-  rustfmt:
-    name: rustfmt
+  lint-test:
+    name: Lint & Test
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
         uses: actions/checkout@v4
       - name: Run rustfmt
         run: cargo fmt --all -- --check --verbose
-  clippy:
-    name: clippy
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout source code
-        uses: actions/checkout@v4
       - name: Run Clippy
         run: cargo clippy --all-targets --all-features
-  test:
-    name: Test
-    runs-on: ${{ matrix.os }}
-    needs: [ rustfmt, clippy ]
-    strategy:
-      matrix:
-        os:
-          - ubuntu-latest
-          - windows-latest
-          - macos-latest
-        toolchain:
-          - "stable"
-          - "nightly"
-    steps:
-      - name: Checkout source code
-        uses: actions/checkout@v4
-      - name: Install nightly toolchain
-        if: matrix.toolchain == 'nightly'
-        run: rustup toolchain install nightly
       - name: Build
-        run: cargo +${{ matrix.toolchain }} build --all --no-default-features --all-features
+        run: cargo build --all --no-default-features --all-features
       - name: Test
-        run: cargo +${{ matrix.toolchain }} test --all --no-default-features --all-features
+        run: cargo test --all --no-default-features --all-features