ci: run Julia formatter on all PRs (#67)

Author: mortenpi

.github/workflows/format-julia.yaml

@@ -7,17 +7,15 @@ on:
       - "**.jl"
       - ".JuliaFormatter.toml"
       - ".github/workflows/format-julia.yaml"
+  # Note: no path filtering when running on PRs, since the formatter
+  # is a required check, and therefore needs to always run.
   pull_request:
     types:
       - opened
       - reopened
       - synchronize
       - ready_for_review
       - labeled
-    paths:
-      - "**.jl"
-      - ".JuliaFormatter.toml"
-      - ".github/workflows/format-julia.yaml"
 
 env:
   CI: true