Upgrades and clean (#28)

* 📝 docs: update README

* 🧪 test: update test project (plugins and scala version)

Author: gaeljw

README.md

@@ -4,7 +4,7 @@
 
 Publishes a Scala module to [Maven Central](https://search.maven.org/)
 
-Needs Java to be installed first.
+Needs Java & SBT to be installed first.
 
 ## Inputs
 
@@ -25,20 +25,22 @@ on:
       - "release/*"
 
 jobs:
-  publish-ui:
-    name: Publish UI package to mvn
+  publish-sbt:
+    name: Publish SBT package to Maven Central
     runs-on: ubuntu-latest
     environment: Release
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v1
         with:
           java-version: '11'
-      - name: Test the action
+      - uses: sbt/setup-sbt@v1
+      - name: Publish
         uses: cucumber/[email protected]
         with:
           gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
           gpg-passphrase: ${{ secrets.GPG_PASSPHRASE }}
           nexus-username: ${{ secrets.SONATYPE_USERNAME }}
           nexus-password: ${{ secrets.SONATYPE_PASSWORD }}
-          working-directory: "scala"
+          working-directory: "."
+```

test/build.sbt

@@ -30,9 +30,9 @@ ThisBuild / homepage := Some(
 
 // Scala versions
 
-val scala212 = "2.12.15"
-val scala213 = "2.13.11"
-val scala3 = "3.0.2"
+val scala212 = "2.12.20"
+val scala213 = "2.13.16"
+val scala3 = "3.3.5"
 
 scalaVersion := scala213
 

test/project/build.properties

@@ -1 +1 @@
-sbt.version=1.9.3
+sbt.version=1.10.10

test/project/plugins.sbt

@@ -1,9 +1,9 @@
 // Cross compilation matrix
-addSbtPlugin("com.eed3si9n" % "sbt-projectmatrix" % "0.9.1")
+addSbtPlugin("com.eed3si9n" % "sbt-projectmatrix" % "0.10.1")
 
 // Release
 addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.13")
 
 // Publishing
-addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.9.21")
-addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.2.1")
+addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.12.2")
+addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.3.1")