CI: vtest: add os name to OT cache key

currently OpenTracing cache does not include os name. it does not
allow to distinguish, for example between ubuntu-24.04 and
ubuntu-24.04-arm.

diff --git a/.github/workflows/vtest.yml b/.github/workflows/vtest.yml
index 8f4c58bfd15f1c88bf0cd9c8518324e6416120f2..23635894686c7fd28f41930b34b3da600f68d14a 100644 (file)
--- a/.github/workflows/vtest.yml
+++ b/.github/workflows/vtest.yml
@@ -76,7 +76,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: '~/opt-ot/'
-        key: ot-${{ matrix.CC }}-${{ env.OT_CPP_VERSION }}-${{ contains(matrix.name, 'ASAN') }}
+        key: ${{ matrix.os }}-ot-${{ matrix.CC }}-${{ env.OT_CPP_VERSION }}-${{ contains(matrix.name, 'ASAN') }}
     - name: Install apt dependencies
       if: ${{ startsWith(matrix.os, 'ubuntu-') }}
       run: |