lib.systems.examples: bump Android SDK and NDK

Per <https://github.com/android/ndk/wiki>, NDK 26 is EOL.

doc/release-notes/rl-2511.section.md

@@ -36,6 +36,8 @@
 
 - `stdenv.mkDerivation` and other derivation builders that use it no longer allow the value of `env` to be anything but an attribute set, for the purpose of setting environment variables that are available to the [builder](https://nix.dev/manual/nix/latest/store/derivation/#builder) process. An environment variable called `env` can still be provided by means of `mkDerivation { env.env = ...; }`, though we recommend to use a more specific name than "env".
 
+- The default Android NDK version has been raised to 27, and the default SDK version to 35.
+
 - `conftest` since `0.60.0` has moved to use rego `v1` as default. To continue using `v0` use `--rego-version v0`. For more information about upgrading to Rego v1 syntax, see the [upstream docs](https://www.openpolicyagent.org/docs/latest/v0-upgrade/).
 
 - `stalwart-mail` since `0.13.0` "introduces a significant redesign of the MTA’s delivery and queueing subsystem". See [the upgrading announcement for the `0.13.0` release](https://github.com/stalwartlabs/stalwart/blob/89b561b5ca1c5a11f2a768b4a2cfef0f473b7a01/UPGRADING.md#upgrading-from-v012x-and-v011x-to-v013x).

lib/systems/examples.nix

@@ -72,8 +72,8 @@ rec {
   armv7a-android-prebuilt = {
     config = "armv7a-unknown-linux-androideabi";
     rust.rustcTarget = "armv7-linux-androideabi";
-    androidSdkVersion = "33";
-    androidNdkVersion = "26";
+    androidSdkVersion = "35";
+    androidNdkVersion = "27";
     useAndroidPrebuilt = true;
   }
   // platforms.armv7a-android;
@@ -81,15 +81,15 @@ rec {
   aarch64-android-prebuilt = {
     config = "aarch64-unknown-linux-android";
     rust.rustcTarget = "aarch64-linux-android";
-    androidSdkVersion = "33";
-    androidNdkVersion = "26";
+    androidSdkVersion = "35";
+    androidNdkVersion = "27";
     useAndroidPrebuilt = true;
   };
 
   aarch64-android = {
     config = "aarch64-unknown-linux-android";
-    androidSdkVersion = "33";
-    androidNdkVersion = "26";
+    androidSdkVersion = "35";
+    androidNdkVersion = "27";
     libc = "bionic";
     useAndroidPrebuilt = false;
     useLLVM = true;

pkgs/top-level/all-packages.nix

@@ -1775,7 +1775,7 @@ with pkgs;
 
   androidenv = callPackage ../development/mobile/androidenv { };
 
-  androidndkPkgs = androidndkPkgs_26;
+  androidndkPkgs = androidndkPkgs_27;
   androidndkPkgs_21 = (callPackage ../development/androidndk-pkgs { })."21";
   androidndkPkgs_23 = (callPackage ../development/androidndk-pkgs { })."23";
   androidndkPkgs_24 = (callPackage ../development/androidndk-pkgs { })."24";