ci: fix benchmarks rules (#7004)

Author: igoragoli

.gitlab/benchmarks.yml

@@ -9,13 +9,12 @@ variables:
 .benchmarks:
   stage: benchmarks
   needs: [ ]
+  tags: ["runner:apm-k8s-m7i-metal"]
+  image: $MICROBENCHMARKS_CI_IMAGE
   rules:
     - if: '$CI_COMMIT_REF_NAME =~ /^graphite-base\/.*$/'
       when: never
     - when: on_success
-  tags: ["runner:apm-k8s-m7i-metal"]
-  image: $MICROBENCHMARKS_CI_IMAGE
-  rules:
     - if: $CI_COMMIT_BRANCH == 'master'
       interruptible: false
     - interruptible: true