ci: migrate CI from Travis to GitHub Actions

Part of #1154

Author: php-coder

Diff for: .github/workflows/deploy.yml

@@ -17,6 +17,7 @@ defaults:
     # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#exit-codes-and-error-action-preference
     shell: bash
 
+# @todo #1154 Deploy should depend on successful execution of the other pipelines
 jobs:
   deploy:
     name: Deploy

Diff for: NEWS.txt

@@ -3,6 +3,7 @@
 - (infrastructure) port JavaScript unit tests from Jasmine to Jest
 - (infrastructure) discontinue usage of Danger
 - (infrastructure) discontinue usage of 0pdd
+- (infrastructure) migrate CI from Travis to GitHub Actions
 
 0.4.6
 - (feature)        users can add a comment to a series

Diff for: README.md

@@ -1,6 +1,8 @@
 # My Stamps
 
-[![Build Status](https://api.travis-ci.com/php-coder/mystamps.svg?branch=master)](https://app.travis-ci.com/github/php-coder/mystamps)
+[![Integration Tests](https://github.com/php-coder/mystamps/actions/workflows/integration-tests-h2.yml/badge.svg?branch=master)](https://github.com/php-coder/mystamps/actions/workflows/integration-tests-h2.yml)
+[![Unit Tests](https://github.com/php-coder/mystamps/actions/workflows/unit-tests.yml/badge.svg)](https://github.com/php-coder/mystamps/actions/workflows/unit-tests.yml)
+[![Static Analysis](https://github.com/php-coder/mystamps/actions/workflows/static-analysis.yml/badge.svg)](https://github.com/php-coder/mystamps/actions/workflows/static-analysis.yml)
 [![Uptime Statistic](https://badgen.net/uptime-robot/month/ur243278-551fbb732949dbdee27c7552)](https://stats.uptimerobot.com/1jXAjFpgP)
 
 ## What is it?

Diff for: docs/wiremock.md

@@ -4,7 +4,7 @@
 WireMock is a simulator for HTTP-based APIs. We use this tool in the integration tests for mocking
 external services. For example, for testing import of the stamps series from sites.
 
-## Running on TravisCI
+## Running on CI
 WireMock is automatically running/stopping during integration tests execution (`./mvnw verify`).
 
 ## Running manually

Diff for: pom.xml

@@ -228,14 +228,7 @@
 			<scope>runtime</scope>
 		</dependency>
 
-		<!--
-			Required for "postgres" profile (see src/main/resources/application-postgres.properties).
-			Perhaps, you would need to override the following properties as by default it's
-			configured for TravisCI environment:
-			- spring.datasource.url
-			- spring.datasource.username
-			- spring.datasource.password
-		-->
+		<!-- Required for "postgres" profile (see src/main/resources/application-postgres.properties) -->
 		<dependency>
 			<groupId>org.postgresql</groupId>
 			<artifactId>postgresql</artifactId>