Update Kokoro's clang-format to version 10

Note the .clang-format config file is now incompatible with clang-format
version 8 due to the use of AfterCaseLabel, which is necessary to match
the current formatting.

Also add amaiorano@google.com as a project owner.

Bug: b/144825072
Change-Id: Ifd8ceae65245f0bc12143095ab5336f177f4a78f
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/43451
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/OWNERS b/OWNERS
index c1fc9da..bedefae 100644
--- a/OWNERS
+++ b/OWNERS
@@ -12,5 +12,6 @@
 shannonwoods@google.com
 chrisforbes@google.com
 cwallez@google.com
+amaiorano@google.com
 
 # COMPONENT: Internals>GPU>SwiftShader
\ No newline at end of file