ci: rebuild core/legacy binaries when tests are changed,

because we need them when we run tests

ci/build.yml

@@ -13,6 +13,7 @@ variables:
       - crypto/**/*
       - python/**/*
       - storage/**/*
+      - tests/**/*
       - tools/**/*
       - vendor/**/*
 
@@ -25,6 +26,7 @@ variables:
       - legacy/**/*
       - python/**/*
       - storage/**/*
+      - tests/**/*
       - tools/**/*
       - vendor/**/*