Simplify build.yml

Author: ascopes

.github/workflows/build.yml

@@ -11,6 +11,23 @@ on:
   workflow_dispatch: {}
 
 jobs:
+  validate:
+    name: Validation steps
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Run ShellCheck
+        uses: ludeeus/action-shellcheck@master
+        with:
+          check_together: 'yes'
+          scandir: './scripts'
+
+      - name: Validate codecov.yml
+        shell: bash
+        run: curl -vvv --fail --data-binary @- https://codecov.io/validate < codecov.yml
+
   build:
     name: Build on JDK ${{ matrix.java-version }} (${{ matrix.os-name }})
     runs-on: ${{ matrix.os-name }}
@@ -28,6 +45,7 @@ jobs:
             java-version: GA
           - os-name: macos-latest
             java-version: GA
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4