ci: increase perl cache version

Author: tkan145

.circleci/config.yml

@@ -26,9 +26,9 @@ commands:
     steps:
       - restore_cache:
           keys:
-          - apicast-cpanm-v2-{{ arch }}-{{ checksum "gateway/cpanfile.snapshot" }}
-          - apicast-cpanm-v2-{{ arch }}-{{ .Branch }}
-          - apicast-cpanm-v2-{{ arch }}-master
+          - apicast-cpanm-v3-{{ arch }}-{{ checksum "gateway/cpanfile.snapshot" }}
+          - apicast-cpanm-v3-{{ arch }}-{{ .Branch }}
+          - apicast-cpanm-v3-{{ arch }}-master
 
   setup-docker:
     steps:
@@ -180,7 +180,7 @@ jobs:
       - restore-perl-cache
       - run: make carton
       - save_cache:
-          key: apicast-cpanm-v2-{{ arch }}-{{ checksum "gateway/cpanfile.snapshot" }}
+          key: apicast-cpanm-v3-{{ arch }}-{{ checksum "gateway/cpanfile.snapshot" }}
           <<: *perl-cache-paths
       - persist_to_workspace:
           root: .