ci: add paths

## Description

by adding paths the ci job wont run if the files aren't touched. this is a change from before where they would run to see if there were changes

Closes: #XXX

.github/workflows/proto.yml

@@ -1,19 +1,18 @@
 name: Proto check
-on: [pull_request]
+on:
+  pull_request:
+    paths:
+      - "**.proto"
 jobs:
-  proto-checks:
+  proto-lint:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
-      - uses: technote-space/get-diff-action@v1
-        id: git_diff
-        with:
-          SUFFIX_FILTER: .proto
-          SET_ENV_NAME_INSERTIONS: 1
-          SET_ENV_NAME_LINES: 1
       - name: lint
         run: make proto-lint
-        if: "env.GIT_DIFF != ''"
+  proto-breakage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
       - name: check-breakage
         run: make proto-check-breaking-ci
-        if: "env.GIT_DIFF != ''"