Add support for AGP 7.0.0-alpha08

Author: ghale

build.gradle

@@ -18,7 +18,7 @@ def isCI = (System.getenv('CI') ?: 'false').toBoolean()
 // Maps supported Android plugin versions to the versions of Gradle that support it
 def sevenDotZeroNightly = "7.0-20210222153642+0000"
 def supportedVersions = [
-    "7.0.0-alpha06": ["6.8.3", sevenDotZeroNightly],
+    "7.0.0-alpha08": ["6.8.3", sevenDotZeroNightly],
     "4.2.0-beta05": ["6.8.3", sevenDotZeroNightly],
     "4.1.2": ["6.5.1", "6.8.3"],
     "4.0.2": ["6.1.1", "6.8.3"],
@@ -142,7 +142,7 @@ supportedVersions.keySet().each { androidVersion ->
     def versionSpecificTest = tasks.register(androidTestTaskName(androidVersion), Test) {
         description = "Runs the multi-version tests for AGP ${androidVersion}"
         group = "verification"
-        
+
         javaLauncher = javaToolchains.launcherFor {
             languageVersion = jdkVersionFor(androidVersion)
         }
@@ -176,4 +176,4 @@ tasks.register("sanityCheck") {
 tasks.withType(ValidatePlugins).configureEach {
     failOnWarning = true
     enableStricterValidation = true
-}
+}