Fix incorrect trigger of post-release workflow (#7)

Co-authored-by: Matej Almasi <¨[email protected]¨>

.github/workflows/post-release.yml

@@ -15,11 +15,9 @@
 # https://eugene-babichenko.github.io/blog/2020/05/09/github-actions-cross-platform-auto-releases/
 # https://github.com/crate-ci/typos
 
-name: post-release
+name: Post release
 on:
   push:
-    branches:
-      - main
     tags:
       - "v*"
 
@@ -28,6 +26,8 @@ env:
 
 jobs:
   publish-to-crates:
+    if: github.ref == 'refs/heads/main'
+
     name: Publish to crates.io
 
     runs-on: ubuntu-latest
@@ -45,6 +45,8 @@ jobs:
         run: cargo publish
 
   create-release:
+    if: github.ref == 'refs/heads/main'
+
     name: Create release
 
     runs-on: ubuntu-latest