Migrate to using = for property setting

Gradle has deprecated `compileSdk 35` style syntax in
Gradle 8.12, in preparation for that upgrade, fix up the violations
in androidx build.gradle files

Test: ./gradlew bOS --dry-run -> https://ge.androidx.dev/s/bqs4fmehxdqzs/deprecations
      and after -> https://ge.androidx.dev/s/nvc7s5bdfpuaa/deprecations
Change-Id: Ic4787d46f40e3856e5f0fa1e3c0a63e3dddc2108
diff --git a/testutils/testutils-appcompat/build.gradle b/testutils/testutils-appcompat/build.gradle
index 5c26d7f..702f43f 100644
--- a/testutils/testutils-appcompat/build.gradle
+++ b/testutils/testutils-appcompat/build.gradle
@@ -44,7 +44,7 @@
     lintOptions {
         disable "InvalidPackage" // Lint is unhappy about junit package
     }
-    namespace "androidx.testutils.appcompat"
+    namespace = "androidx.testutils.appcompat"
 }
 
 androidx {
diff --git a/testutils/testutils-espresso/build.gradle b/testutils/testutils-espresso/build.gradle
index 1e0f813..7aa2e4c 100644
--- a/testutils/testutils-espresso/build.gradle
+++ b/testutils/testutils-espresso/build.gradle
@@ -41,7 +41,7 @@
     lintOptions {
         disable "InvalidPackage" // Lint is unhappy about junit package
     }
-    namespace "androidx.testutils.espresso"
+    namespace = "androidx.testutils.espresso"
 }
 
 androidx {
diff --git a/testutils/testutils-fonts/build.gradle b/testutils/testutils-fonts/build.gradle
index 66aba23..ea4956b 100644
--- a/testutils/testutils-fonts/build.gradle
+++ b/testutils/testutils-fonts/build.gradle
@@ -53,5 +53,5 @@
 }
 
 android {
-    namespace "androidx.testutils.fonts"
+    namespace = "androidx.testutils.fonts"
 }
diff --git a/testutils/testutils-macrobenchmark/build.gradle b/testutils/testutils-macrobenchmark/build.gradle
index e07a748..0cc739e 100644
--- a/testutils/testutils-macrobenchmark/build.gradle
+++ b/testutils/testutils-macrobenchmark/build.gradle
@@ -38,9 +38,9 @@
 
 android {
     defaultConfig {
-        minSdkVersion 23
+        minSdk = 23
     }
-    namespace "androidx.testutils.macrobenchmark"
+    namespace = "androidx.testutils.macrobenchmark"
 }
 
 androidx {
diff --git a/testutils/testutils-mockito/build.gradle b/testutils/testutils-mockito/build.gradle
index 8550ce9..174351dc 100644
--- a/testutils/testutils-mockito/build.gradle
+++ b/testutils/testutils-mockito/build.gradle
@@ -39,7 +39,7 @@
     lintOptions {
         disable "InvalidPackage" // Lint is unhappy about java.lang.instrument package
     }
-    namespace "androidx.testutils.mockito"
+    namespace = "androidx.testutils.mockito"
 }
 
 androidx {
diff --git a/testutils/testutils-navigation/build.gradle b/testutils/testutils-navigation/build.gradle
index 52271cd..f691639 100644
--- a/testutils/testutils-navigation/build.gradle
+++ b/testutils/testutils-navigation/build.gradle
@@ -52,5 +52,5 @@
 }
 
 android {
-    namespace "androidx.testutils.navigation"
+    namespace = "androidx.testutils.navigation"
 }
diff --git a/testutils/testutils-runtime/build.gradle b/testutils/testutils-runtime/build.gradle
index 4d4ce3b..dabb929 100644
--- a/testutils/testutils-runtime/build.gradle
+++ b/testutils/testutils-runtime/build.gradle
@@ -45,7 +45,7 @@
     defaultConfig {
         testInstrumentationRunner "androidx.testutils.ActivityRecyclingAndroidJUnitRunner"
     }
-    namespace "androidx.testutils.runtime"
+    namespace = "androidx.testutils.runtime"
 }
 
 androidx {