Fix version update script and use idiomatic Kotlin DSL

Author: sibasispadhi

.github/scripts/update-version.sh

@@ -11,10 +11,12 @@ fi
 sed -Ei "s/val stableVersion = \"[^\"]*\"/val stableVersion = \"$version\"/" version.gradle.kts
 sed -Ei "s/val alphaVersion = \"[^\"]*\"/val alphaVersion = \"$alpha_version\"/" version.gradle.kts
 
-sed -Ei "s/(opentelemetryJavaagent *: )\"[^\"]*\"/\1\"$version\"/" examples/distro/build.gradle
-sed -Ei "s/(opentelemetryJavaagentAlpha *: )\"[^\"]*\"/\1\"$alpha_version\"/" examples/distro/build.gradle
+sed -Ei "s/(\"opentelemetryJavaagent\" to )\"[^\"]*\"/\1\"$version\"/" examples/distro/build.gradle.kts
+sed -Ei "s/(\"opentelemetryJavaagentAlpha\" to )\"[^\"]*\"/\1\"$alpha_version\"/" examples/distro/build.gradle.kts
+
+sed -Ei "s/(classpath\(\"io\.opentelemetry\.instrumentation:gradle-plugins:)[^\"]*(\"\)\))/\1$alpha_version\2/" examples/distro/build.gradle.kts
+
 
-sed -Ei "s/(classpath \"io.opentelemetry.instrumentation:gradle-plugins:)[^\"]*\"/\1$alpha_version\"/" examples/distro/build.gradle
 
 sed -Ei "s/(opentelemetryJavaagent *: )\"[^\"]*\"/\1\"$version\"/" examples/extension/build.gradle
 sed -Ei "s/(opentelemetryJavaagentAlpha *: )\"[^\"]*\"/\1\"$alpha_version\"/" examples/extension/build.gradle