Update version to 0.6.1

A bit premature, but wanted to try something out because IntelliJ
is breaking out a bit and it might be because I'm using a
SNAPSHOT target.

README.md

@@ -1,6 +1,6 @@
 ## Truthish
 
-[![version](https://img.shields.io/badge/version-0.6.0-yellow.svg)](https://semver.org)
+[![version](https://img.shields.io/badge/version-0.6.1-yellow.svg)](https://semver.org)
 <a href="https://discord.gg/bCdxPr7aTV">
   <img alt="Varabyte Discord" src="https://img.shields.io/discord/886036660767305799.svg?label=&logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2" />
 </a>
@@ -141,6 +141,6 @@ dependencies {
   // ...
 
   testImplementation "org.jetbrains.kotlin:kotlin-test"
-  testImplementation "com.varabyte.truthish:truthish:0.6.0"
+  testImplementation "com.varabyte.truthish:truthish:0.6.1"
 }
 ```

build.gradle.kts

@@ -9,7 +9,7 @@ repositories {
 }
 
 group = "com.varabyte.truthish"
-version = "0.6.1-SNAPSHOT"
+version = "0.6.1"
 
 kotlin {
     jvm {