Declare shared shadow plugin version and use it consistently

prepare/compiler-client-embeddable/build.gradle.kts

@@ -8,7 +8,7 @@ buildscript {
     }
 
     dependencies {
-        classpath("com.github.jengelman.gradle.plugins:shadow:1.2.3")
+        classpath("com.github.jengelman.gradle.plugins:shadow:${property("versions.shadow")}")
     }
 }
 

prepare/compiler-embeddable/build.gradle.kts

@@ -9,7 +9,7 @@ buildscript {
     }
 
     dependencies {
-        classpath("com.github.jengelman.gradle.plugins:shadow:1.2.3")
+        classpath("com.github.jengelman.gradle.plugins:shadow:${property("versions.shadow")}")
     }
 }
 

prepare/compiler/build.gradle.kts

@@ -12,7 +12,7 @@ buildscript {
     }
 
     dependencies {
-        classpath("com.github.jengelman.gradle.plugins:shadow:1.2.3")
+        classpath("com.github.jengelman.gradle.plugins:shadow:${property("versions.shadow")}")
         classpath("net.sf.proguard:proguard-gradle:5.3.1")
     }
 }

prepare/jps-plugin/build.gradle.kts

@@ -9,7 +9,7 @@ buildscript {
     }
 
     dependencies {
-        classpath("com.github.jengelman.gradle.plugins:shadow:2.0.1")
+        classpath("com.github.jengelman.gradle.plugins:shadow:${property("versions.shadow")}")
     }
 }
 

prepare/kotlin-plugin/build.gradle.kts

@@ -10,7 +10,7 @@ buildscript {
     }
 
     dependencies {
-        classpath("com.github.jengelman.gradle.plugins:shadow:1.2.3")
+        classpath("com.github.jengelman.gradle.plugins:shadow:${property("versions.shadow")}")
     }
 }