Update workflow name and badge URL

Author: pacso

.github/workflows/lint_and_test.yaml renamed to .github/workflows/tests.yaml

@@ -1,7 +1,15 @@
-on: [push, pull_request]
-name: Lint & Test
+name: Tests
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
 jobs:
-  rspec:
+  test:
     strategy:
       matrix:
         rails: ['5.2', '6.0.4', '6.1']

README.md

@@ -1,6 +1,6 @@
 # ice_cube - Easy schedule expansion
 
-![Build Status](https://github.com/seejohnrun/ice_cube/actions/workflows/lint_and_test/badge.svg)
+[![Tests](https://github.com/seejohnrun/ice_cube/workflows/Tests/badge.svg)](https://github.com/seejohnrun/ice_cube/actions?query=workflow%3ATests)
 [![Gem Version](https://badge.fury.io/rb/ice_cube.svg)](http://badge.fury.io/rb/ice_cube)
 
 ```bash