chore: cleaning ci steps and upgrading dependencies.

## Types of changes

- [ ] I have read the **CONTRIBUTING** document.
- [ ] My code follows the code style of this project.
- [ ] I have updated the documentation accordingly.
- [ ] I have added tests to cover my changes.
- [ ] All new and existing tests passed.
- [ ] This is **NOT** translation related.

This closes issue #XXX

This is implements feature #YYY

This finishes chore #ZZZ

Co-authored-by: davidoskky <davidoskky@yahoo.it>
Co-authored-by: aminecmi <aminecmi@gmail.com>
Reviewed-on: https://gitea.amine-louveau.fr/Louvorg/ReaderForSelfoss-multiplatform/pulls/150

build.gradle.kts

@@ -1,18 +1,18 @@
 buildscript {
     dependencies {
         // SqlDelight
-        classpath("com.squareup.sqldelight:gradle-plugin:1.5.4")
+        classpath("com.squareup.sqldelight:gradle-plugin:1.5.5")
     }
 }
 
 plugins {
     //trick: for the same plugin versions in all sub-modules
-    id("com.android.application").version("7.4.0").apply(false)
-    id("com.android.library").version("7.4.0").apply(false)
-    kotlin("android").version("1.7.20").apply(false)
-    kotlin("multiplatform").version("1.7.20").apply(false)
+    id("com.android.application").version("8.1.2").apply(false)
+    id("com.android.library").version("8.1.2").apply(false)
+    id("org.jetbrains.kotlin.android").version("1.9.10").apply(false)
+    kotlin("multiplatform").version("1.9.10").apply(false)
     id("com.mikepenz.aboutlibraries.plugin").version("10.5.1").apply(false)
-    id("org.jetbrains.kotlinx.kover") version "0.6.1"
+    id("org.jetbrains.kotlinx.kover").version("0.6.1").apply(true)
 }
 
 allprojects {
@@ -20,7 +20,6 @@ allprojects {
         // maven { url = uri("https://nexus.amine-louveau.fr/repository/maven-public/")}
         google()
         mavenCentral()
-        jcenter()
         maven { url = uri("https://www.jitpack.io") }
     }
 }