CI: Bump cache key

Author: threema-danilo

.circleci/config.yml

@@ -10,8 +10,8 @@ jobs:
       # Multiple caches are used to increase the chance of a cache hit.
       - restore_cache:
           keys:
-            - v2-cargo-cache-{{ arch }}-{{ .Branch }}
-            - v2-cargo-cache-{{ arch }}
+            - v3-cargo-cache-{{ arch }}-{{ .Branch }}
+            - v3-cargo-cache-{{ arch }}
 
       # Diagnostics
       - run:
@@ -63,13 +63,13 @@ jobs:
 
       # Save cache
       - save_cache:
-          key: v2-cargo-cache-{{ arch }}-{{ .Branch }}
+          key: v3-cargo-cache-{{ arch }}-{{ .Branch }}
           paths:
             - target
             - ffi/target
             - /usr/local/cargo/registry
       - save_cache:
-          key: v2-cargo-cache-{{ arch }}
+          key: v3-cargo-cache-{{ arch }}
           paths:
             - target
             - ffi/target