github-runner: add aarch64-linux to platforms

pkgs/development/tools/continuous-integration/github-runner/default.nix

@@ -29,7 +29,10 @@ let
   nugetSource = linkFarm "nuget-packages" nugetPackages;
 
   dotnetSdk = dotnetCorePackages.sdk_3_1;
-  runtimeId = "linux-x64";
+  runtimeId =
+    if stdenv.isAarch64
+    then "linux-arm64"
+    else "linux-x64";
   fakeSha1 = "0000000000000000000000000000000000000000";
 in
 stdenv.mkDerivation rec {
@@ -271,7 +274,7 @@ stdenv.mkDerivation rec {
     description = "Self-hosted runner for GitHub Actions";
     homepage = "https://github.com/actions/runner";
     license = licenses.mit;
-    maintainers = with maintainers; [ veehaitch ];
-    platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ veehaitch newam ];
+    platforms = [ "x86_64-linux" "aarch64-linux" ];
   };
 }

pkgs/development/tools/continuous-integration/github-runner/deps.nix

@@ -18,6 +18,11 @@ in
     version = "3.1.19";
     sha256 = "19z4zrchaxcz0a33c33n1qd11z9khj4323nfzsbzah0xxkkj8ka8";
   })
+  (fetchNuGet {
+    name = "microsoft.aspnetcore.app.runtime.linux-arm64";
+    version = "3.1.19";
+    sha256 = "0xspb0xib1zsqnkkqm4s26z27v9idh9k09zziar1cavh2hxxxfcd";
+  })
   (fetchNuGet {
     name = "microsoft.aspnet.webapi.client";
     version = "5.2.4";
@@ -43,6 +48,11 @@ in
     version = "3.1.19";
     sha256 = "10c9bq1z8j173n9jzamgplbxq101yscwdhksshn1ybisn7cr5g0h";
   })
+  (fetchNuGet {
+    name = "microsoft.netcore.app.runtime.linux-arm64";
+    version = "3.1.19";
+    sha256 = "0v9nc38bg4k2qk547pl1rlrslwprixqlbhcbbf6pw1ia6261wm5m";
+  })
   (fetchNuGet {
     name = "microsoft.netcore.platforms";
     version = "1.0.1";