Migrate the plugin to support SBT 2.

build.sbt

@@ -3,17 +3,16 @@ ThisBuild / organizationName := "garrity software"
 ThisBuild / organization     := "gs"
 ThisBuild / versionScheme    := Some("semver-spec")
 
-externalResolvers := Seq(
-  "Garrity Software Releases" at
-    "https://maven.garrity.co/gs",
-  "Garrity Software Maven Mirror" at
-    "https://maven.garrity.co/releases"
-)
+/* externalResolvers := Seq( "Garrity Software Releases" at
+ * "https://maven.garrity.co/gs", "Garrity Software Maven Mirror" at
+ * "https://maven.garrity.co/releases" ) */
+
+resolvers += Resolver.mavenLocal
 
 val ProjectName: String = "sbt-gs-semver"
 val Description: String = "SBT 2.0.0+ plugin for Git-based semantic versioning."
 
-val CurrentVersion: String = "0.4.1"
+val CurrentVersion: String = "0.4.0-SNAPSHOT"
 
 def isRelease(): Boolean =
   !CurrentVersion.contains("SNAPSHOT")
@@ -24,18 +23,18 @@ lazy val publishSettings = Seq(
   pomIncludeRepository   := Function.const(false),
   scmInfo := Some(
     ScmInfo(
-      uri(s"https://git.garrity.co/garrity-software/$ProjectName"),
+      url(s"https://git.garrity.co/garrity-software/$ProjectName"),
       s"git@git.garrity.co:garrity-software/$ProjectName.git"
     )
   ),
   description := Description,
   licenses := List(
-    "MIT" -> uri(
+    "MIT" -> url(
       s"https://git.garrity.co/garrity-software/$ProjectName/LICENSE"
     )
   ),
   homepage := Some(
-    uri(s"https://git.garrity.co/garrity-software/$ProjectName")
+    url(s"https://git.garrity.co/garrity-software/$ProjectName")
   ),
   publishTo := {
     val repo = "https://maven.garrity.co/"