chore(deps): pin grafana/xk6 action to a48be20 (#277)

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/release.yml

@@ -9,7 +9,7 @@ permissions: {}
 jobs:
   release:
     name: Release
-    uses: grafana/xk6/.github/workflows/tooling-release.yml@v1.2.4
+    uses: grafana/xk6/.github/workflows/tooling-release.yml@a48be20fb07a5504ce71498953b4083102a5acbb # v1.2.4
     permissions:
       contents: write
       packages: write

.github/workflows/validate.yml

@@ -12,7 +12,7 @@ permissions: {}
 jobs:
   validate:
     name: Validate
-    uses: grafana/xk6/.github/workflows/tooling-validate.yml@v1.2.4
+    uses: grafana/xk6/.github/workflows/tooling-validate.yml@a48be20fb07a5504ce71498953b4083102a5acbb # v1.2.4
     secrets:
       codecov-token: ${{secrets.CODECOV_TOKEN}}
     with: