ci: fix warnings reported by yamllint

.github/workflows/build.yml

@@ -1,3 +1,4 @@
+---
 name: Build Targets
 
 on: [push, pull_request]
@@ -11,26 +12,27 @@ jobs:
       fail-fast: false
       matrix:
         config:
-        - {
+          - {
             name: "GZDoom"
           }
-        - {
+          - {
             name: "Raze"
           }
-        - {
+          - {
             name: "PrBoom-Plus"
           }
 
     steps:
-    - uses: actions/checkout@v1
+      - uses: actions/checkout@v1
 
-    - name: Build
-      run: |
-        ./build.py --target ${{ matrix.config.name }}
+      - name: Build
+        run: |
+          ./build.py --target ${{ matrix.config.name }}
 
-    - name: List Build Directory
-      if: always()
-      shell: bash
-      run: |
-        git status
-        ls -lR .
+      - name: List Build Directory
+        if: always()
+        shell: bash
+        run: |
+          git status
+          ls -lR .
+...

.github/workflows/lint.yml

@@ -1,3 +1,4 @@
+---
 name: Lint Code
 
 on: [push, pull_request]
@@ -7,23 +8,30 @@ jobs:
     if: "${{ !contains(github.event.head_commit.message, '[skip lint]') }}"
     runs-on: ubuntu-20.04
     steps:
-    - name: Checkout
-      uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v2
 
-    - name: Super-Linter
-      uses: docker://ghcr.io/github/super-linter:slim-v4
-      env:
+      - name: Super-Linter
+        uses: docker://ghcr.io/github/super-linter:slim-v4
+        env:
           FILTER_REGEX_INCLUDE: .*(\.py|\.md|\.yml)$
           FILTER_REGEX_EXCLUDE: .*/deps/.*
           VALIDATE_NATURAL_LANGUAGE: false
           VALIDATE_PYTHON_BLACK: false
 
-    - name: Bandit
-      run: |
-        pip3 install bandit
-        # [B101:assert_used] Use of assert detected. The enclosed code will be removed when compiling to optimised byte code.
-        # [B310:blacklist] Audit url open for permitted schemes. Allowing use of file:/ or custom schemes is often unexpected.
-        # [B404:blacklist] Consider possible security implications associated with subprocess module.
-        # [B603:subprocess_without_shell_equals_true] subprocess call - check for execution of untrusted input.
-        # [B607:start_process_with_partial_path] Starting a process with a partial executable path
-        bandit --skip B101,B310,B404,B603,B607 --recursive . --exclude ./deps/vulkan-headers/share/vulkan/registry
+      - name: Bandit
+        run: |
+          pip3 install bandit
+          # [B101:assert_used] Use of assert detected. The enclosed code will be
+          #   removed when compiling to optimised byte code.
+          # [B310:blacklist] Audit url open for permitted schemes. Allowing use
+          #   of file:/ or custom schemes is often unexpected.
+          # [B404:blacklist] Consider possible security implications associated
+          #   with subprocess module.
+          # [B603:subprocess_without_shell_equals_true] subprocess call - check
+          #   for execution of untrusted input.
+          # [B607:start_process_with_partial_path] Starting a process with a
+          #   partial executable path
+          bandit --skip B101,B310,B404,B603,B607 --recursive . --exclude \
+          ./deps/vulkan-headers/share/vulkan/registry
+...

.github/workflows/test.yml

@@ -1,3 +1,4 @@
+---
 name: Test Libraries
 
 on: [push, pull_request]
@@ -7,8 +8,9 @@ jobs:
     if: "${{ !contains(github.event.head_commit.message, '[skip test]') }}"
     runs-on: "macos-12"
     steps:
-    - uses: actions/checkout@v1
+      - uses: actions/checkout@v1
 
-    - name: Run tests
-      run: |
-        ./build.py --target=test-deps
+      - name: Run tests
+        run: |
+          ./build.py --target=test-deps
+...