ci: add missing snap_name [skip ci]

.github/workflows/insider-linux.yml

@@ -417,6 +417,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       RELEASE_VERSION: ${{ needs.check.outputs.RELEASE_VERSION }}
+      SNAP_NAME: codium-insiders
     strategy:
       fail-fast: false
       matrix:

.github/workflows/stable-linux.yml

@@ -413,6 +413,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       RELEASE_VERSION: ${{ needs.check.outputs.RELEASE_VERSION }}
+      SNAP_NAME: codium
     strategy:
       fail-fast: false
       matrix: