chore(deps): pin projectbluefin/testsuite action to b7a7cda

Author: mergeraptor[bot]

.github/workflows/run-testsuite.yml

@@ -21,7 +21,7 @@ jobs:
     permissions:
       contents: read
       packages: write  # testsuite pushes screenshot OCI artifacts to GHCR
-    uses: projectbluefin/testsuite/.github/workflows/e2e.yml@v1
+    uses: projectbluefin/testsuite/.github/workflows/e2e.yml@b7a7cdac701d067689c59110e352e438a01cd648 # v1
     with:
       image: ${{ inputs.image }}
       suites: ${{ inputs.suites }}