chore(deps): update grafana/shared-workflows/get-vault-secrets action to v1.2.1 (#42)

Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>
Co-authored-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>

Author: renovate-sh-app[bot]

.github/workflows/publish.yaml

@@ -13,7 +13,7 @@ jobs:
       packages: write
       id-token: write
     steps:
-      - uses: grafana/shared-workflows/actions/get-vault-secrets@28361cdb22223e5f1e34358c86c20908e7248760 # get-vault-secrets-v1.1.0
+      - uses: grafana/shared-workflows/actions/get-vault-secrets@9f37f656e063f0ad0b0bfc38d49894b57d363936 # get-vault-secrets/v1.2.1
         with:
           # Secrets placed in the ci/repo/grafana/<repo>/<path> path in Vault
           # Also stored in 1Password as "k6 Cloud CI/CD Secrets" (Vault is write-only)