Fix BC CI action (#44)

Author: vjik

.github/workflows/bc.yml

@@ -1,15 +1,33 @@
 on:
   pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'CHANGELOG.md'
+      - '.gitignore'
+      - '.gitattributes'
+      - 'infection.json.dist'
+      - 'phpunit.xml.dist'
+      - 'psalm.xml'
   push:
+    branches: ['master']
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'CHANGELOG.md'
+      - '.gitignore'
+      - '.gitattributes'
+      - 'infection.json.dist'
+      - 'phpunit.xml.dist'
+      - 'psalm.xml'
 
 name: backwards compatibility
+
 jobs:
   roave_bc_check:
-    name: Roave BC Check
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@master
-      - name: fetch tags
-        run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-      - name: Roave BC Check
-        uses: docker://nyholm/roave-bc-check-ga
+    uses: yiisoft/actions/.github/workflows/bc.yml@master
+    with:
+      os: >-
+        ['ubuntu-latest']
+      php: >-
+        ['8.1']