Update Gradle to 8.1 and AGP to v8.0 (#329)

* Update AGP to 8.0.0.

* Set JAVA_HOME to JDK17

* Update lint version.

* Use right JDK for dependency analysis, replace deprecated env var.

* Upgrade to Gradle 8.1.

* Remove `@Supress(DSL_SCOPE_VIOLATION)` as it's no longer needed.

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

services/appnavstate/api/build.gradle.kts

@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-// TODO: Remove once https://youtrack.jetbrains.com/issue/KTIJ-19369 is fixed
-@Suppress("DSL_SCOPE_VIOLATION")
 plugins {
     id("io.element.android-library")
 }