docs: update to version 0.1.2

Author: linux-china

README.md

@@ -36,7 +36,7 @@ Add the following dependency to your `pom.xml`:
 <dependency>
     <groupId>org.mvnsearch</groupId>
     <artifactId>dotenvx-spring-boot-starter</artifactId>
-    <version>0.1.1</version>
+    <version>0.1.2</version>
 </dependency>
 ```