Also run CI on PRs

Author: jonhoo

.github/workflows/coverage.yml

@@ -1,4 +1,4 @@
-on: [push]
+on: [push, pull_request]
 name: coverage
 jobs:
   test:

.github/workflows/features.yml

@@ -1,4 +1,4 @@
-on: [push]
+on: [push, pull_request]
 name: cargo hack
 jobs:
   check:

.github/workflows/minimal.yml

@@ -1,4 +1,4 @@
-on: [push]
+on: [push, pull_request]
 name: With dependencies at minimal versions
 jobs:
   test:

.github/workflows/msrv.yml

@@ -1,4 +1,4 @@
-on: [push]
+on: [push, pull_request]
 name: Minimum Supported Rust Version
 jobs:
   check:

.github/workflows/style.yml

@@ -1,4 +1,4 @@
-on: [push]
+on: [push, pull_request]
 name: lint
 jobs:
   style:

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-on: [push]
+on: [push, pull_request]
 name: cargo test
 jobs:
   test: