ci: Run unit and integration tests on all supported os/arch combinations

This is good practice and also helps prevent regressions of #190

.github/workflows/integration-tests.yml

@@ -7,7 +7,16 @@ on:
 jobs:
    trigger-integration-tests:
       name: Trigger Integration tests
-      runs-on: ubuntu-latest
+      strategy:
+         matrix:
+            os:
+               - ubuntu-latest
+               - ubuntu-24.04-arm
+               - windows-latest
+               - windows-11-arm
+               - macos-latest # arm
+               - macos-13 # x64
+      runs-on: ${{ matrix.os }}
       env:
          HELM_3_8_0: 'v3.8.0'
          HELM_3_7_2: 'v3.7.2'

.github/workflows/unit-tests.yml

@@ -11,7 +11,16 @@ on: # rebuild any PRs and main branch changes
 
 jobs:
    build: # make sure build/ci works properly
-      runs-on: ubuntu-latest
+      strategy:
+         matrix:
+            os:
+               - ubuntu-latest
+               - ubuntu-24.04-arm
+               - windows-latest
+               - windows-11-arm
+               - macos-latest # arm
+               - macos-13 # x64
+      runs-on: ${{ matrix.os }}
       steps:
          - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2