use new workflow

.github/workflows/main.yaml

@@ -7,5 +7,5 @@ on:
 
 jobs:
   main:
-    uses: ocadotechnology/codeforlife-workspace/.github/workflows/backend.yaml@main
+    uses: ocadotechnology/codeforlife-workspace/.github/workflows/backend.yaml@contributor-backend-31 # TODO: set to @main
     secrets: inherit

.releaserc.json

@@ -0,0 +1,21 @@
+{
+  "branches": ["contributor-backend-31"],
+  "plugins": [
+    "@semantic-release/commit-analyzer",
+    "@semantic-release/release-notes-generator",
+    "@semantic-release/changelog",
+    [
+      "@semantic-release/git",
+      {
+        "assets": ["CHANGELOG.md"],
+        "message": "chore(release): ${nextRelease.version} [skip ci]\n\n${nextRelease.notes}"
+      }
+    ],
+    [
+      "@semantic-release/github",
+      {
+        "assets": ["CHANGELOG.md"]
+      }
+    ]
+  ]
+}