always trigger required sharktank CI

Since this is required for pr merges, we always need to run it if we don't trigger some dummy workflow. Recommended course of action is to always trigger required jobs, or do not require path-conditionally triggered jobs.

.github/workflows/ci-sharktank.yml

@@ -3,17 +3,9 @@ name: CI - sharktank
 on:
   workflow_dispatch:
   pull_request:
-    paths:
-      - '.github/workflows/ci-sharktank.yml'
-      - 'sharktank/**'
-      - '*requirements*.txt'
   push:
     branches:
       - main
-    paths:
-      - '.github/workflows/ci-sharktank.yml'
-      - 'sharktank/**'
-      - '*requirements*.txt'
 
 concurrency:
   # A PR number if a pull request and otherwise the commit hash. This cancels