Update dependency com.gradleup.shadow to v9

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

build.gradle.kts

@@ -67,8 +67,8 @@ subprojects {
 
     dependencies {
         // Tests
-        testImplementation("org.junit.jupiter:junit-jupiter:5.13.4")
-        testRuntimeOnly("org.junit.platform:junit-platform-launcher:1.13.4")
+        testImplementation("org.junit.jupiter:junit-jupiter:5.14.0")
+        testRuntimeOnly("org.junit.platform:junit-platform-launcher:1.14.0")
     }
 
     plugins.withId("java") {

gradle/libs.versions.toml

@@ -3,7 +3,7 @@
 paper = "1.20.4-R0.1-SNAPSHOT"
 guice = "7.0.0"
 spotbugs = "4.9.6"
-checkerqual = "3.51.0"
+checkerqual = "3.51.1"
 gson = "2.10"
 guava = "31.1-jre"
 snakeyaml = "2.0"
@@ -33,11 +33,11 @@ vault = "1.7.1"
 serverlib = "2.3.7"
 
 # Gradle plugins
-shadow = "8.3.9"
+shadow = "9.2.2"
 grgit = "4.1.1"
-spotless = "7.2.1"
+spotless = "8.0.0"
 publish = "0.34.0"
-runPaper = "2.3.1"
+runPaper = "3.0.1"
 
 [libraries]
 # Platform expectations