update Gradle to 7.3.3

[benoit-pierre]

So Java 17 can be used, the minimum required version to use the most recent Android SDK tools like sdkmanager.

The koandroid docker image will have to be updated to Focal (20.04), which is good idea anyway as the currently used version reached EOL in May (Bionic: 18.04).

---

This change is 

[Frenzie]

We're not willfully on 18.04 ftr, but it fails (hopefully now failed) in CI with 20.04 or 22.04 while the exact same Docker image worked fine locally. https://github.com/koreader/virdevenv/commit/9052cee45b019180d787d61b6d56b5428f847590

[pazos]

So Java 17 can be used, the minimum required version to use the most recent Android SDK tools like sdkmanager.

I would prefeer java 11 (the minimum required version nowadays) and keep the sdk as is for a while.

But that's because I have no real idea of the benefits of a new sdk :smile:

In both cases the docker image needs to be updated and this PR is ok as is

Also works fine with slightly newer versions:

diff --git a/build.gradle b/build.gradle
index 213823c..0ff5834 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,8 +3,8 @@ buildscript {
     ext.targetSdk = 30
     ext.minSdk = 18

-    ext.gradle_plugin_version = '4.2.1'
-    ext.kotlin_plugin_version = '1.5.20'
+    ext.gradle_plugin_version = '7.4.2'
+    ext.kotlin_plugin_version = '1.6.21'
     ext.androidx_core_version = '1.6.0'
     ext.androidx_appcompat_version = '1.3.1'
     ext.androidx_supportv4_version = '1.0.0'
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 4d9ca16..8049c68 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

[benoit-pierre]

I would prefeer java 11 (the minimum required version nowadays) and keep the sdk as is for a while.

The SDK is unchanged, it's just the commandline tools ( apkanalyzer, avdmanager, sdkmanager).

But that's because I have no real idea of the benefits of a new sdk 😄

It's annoying to have to keep an old version of Java and the those tools just for koreader (independently of the NDK / SDK versions).

Additionally, JDK 17 is available on Ubuntu 20.04 LTS too (so it's not that fresh).

In both cases the docker image needs to be updated and this PR is ok as is

See https://github.com/koreader/virdevenv/pull/93.

Also works fine with slightly newer versions:

Yep, thank, applied.