chore: gc prune cli to save space

Author: parker-snyk

.circleci/build-cli.sh

@@ -21,3 +21,6 @@ npm i
 
 echo "Running build"
 npm run build
+
+echo "Pruning git to save space"
+git gc --prune=now

.circleci/config.yml

@@ -298,13 +298,13 @@ jobs:
             echo $CLI_COMMIT_HASH >> /tmp/cli-version
       - restore_cache:
           keys:
-            - v1-cli-repo-{{ checksum "/tmp/cli-version" }}
-            - v1-cli-repo-
+            - v1-cli-repo-g-{{ checksum "/tmp/cli-version" }}
+            - v1-cli-repo-g-
       - run:
           name: Build Snyk CLI with latest changes
           command: ./.circleci/build-cli.sh
       - save_cache:
-          key: v1-cli-repo-{{ checksum "/tmp/cli-version" }}
+          key: v1-cli-repo-g-{{ checksum "/tmp/cli-version" }}
           paths:
             - ~/cli
   build_and_test_latest_go_binary: