fix(action): correct indentation for strategy and matrix in build job

Co-authored-by: Copilot <copilot@github.com>

.github/workflows/build.yml

@@ -31,10 +31,10 @@ on:
 jobs:
   build-gki:
     name: "${{ inputs.kernel_version }} (${{ matrix.variant }})"
-      strategy:
-        fail-fast: false
-        matrix:
-          variant: ${{ (inputs.variant == 'All' && 'Normal,Bypass,Wild' || inputs.variant) .split(',') }}
+    strategy:
+      fail-fast: false
+      matrix:
+        variant: ${{ (inputs.variant == 'All' && 'Normal,Bypass,Wild' || inputs.variant) .split(',') }}
     runs-on: ubuntu-latest
     timeout-minutes: 60