Upgrade jreleaser to 1.21.0 (#7)

Author: tanin47

README.md

@@ -42,13 +42,14 @@ Here's how you can build your fat JAR:
 
 The far JAR is built at `./build/libs/embeddablee-java-web-framework-VERSION.jar`
 
-You can run your server with: `java -jar ./build/libs/embeddablee-java-web-framework-VERSION.jar`
+You can run your server with: `java -jar ./build/libs/embeddable-java-web-framework-VERSION.jar`
 
 To publish to a Maven repository, please follow the below steps:
 
 1. Remove `./build/staging-deploy` by running `rm -rf ./build/staging-deploy`
 2. Run `./gradlew publish`
-3. Run `./gradlew jreleaserDeploy`
+3. Set up `~/.jreleaser/config.toml` with `JRELEASER_MAVENCENTRAL_USERNAME` and `JRELEASER_MAVENCENTRAL_PASSWORD`
+4. Run `./gradlew jreleaserDeploy`
 
 Embed your website into a larger system
 ----------------------------------------

build.gradle.kts

@@ -1,15 +1,16 @@
 import org.jreleaser.model.Active
+import org.jreleaser.model.Signing.Mode
 
 plugins {
     `java-library`
     application
     `maven-publish`
-    id("org.jreleaser") version "1.20.0"
+    id("org.jreleaser") version "1.21.0"
     id("com.gradleup.shadow") version "9.2.2"
 }
 
 group = "tanin.ejwf"
-version = "0.3.0"
+version = "0.4.0"
 
 description = "Embeddable Java Web Framework (EJWF)"
 
@@ -92,6 +93,7 @@ publishing {
 
 jreleaser {
     signing {
+        mode = Mode.COMMAND
         active = Active.ALWAYS
         armored = true
     }