fix: make format after updating gn

update formatting after gn tool update [1]

[1] https://review.trustedfirmware.org/c/hafnium/hafnium/+/19180

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I68d053950be5b7a20a016c431635e028b1e9cfaa
diff --git a/BUILD.gn b/BUILD.gn
index 667cbd1..daef67e 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -34,11 +34,7 @@
 source_set("gtest_main") {
   testonly = true
 
-  sources = [
-    "googlemock/src/gmock_main.cc",
-  ]
+  sources = [ "googlemock/src/gmock_main.cc" ]
 
-  deps = [
-    ":gtest",
-  ]
+  deps = [ ":gtest" ]
 }