[benchmarks] Checkout check-pysqlcipher script because older commits don't have it.

.gitlab-ci.yml

@@ -78,7 +78,11 @@ benchmark:
     # benchmarking data to elasticsearch.
     - git remote add leap https://leap.se/git/soledad
     - git fetch leap
-    - git checkout leap/master testing/tox.ini testing/tests/benchmarks/conftest.py testing/tests/conftest.py
+    - git checkout leap/master
+        testing/tox.ini
+        testing/tests/benchmarks/conftest.py
+        testing/tests/conftest.py
+        testing/check-pysqlcipher.py
     - git checkout leap/benchmark-all-commits tune-adbapi-parameters.sh
     # ensure larger timeout and more retries for async/concurrent sqlcipher access
     - ./tune-adbapi-parameters.sh