Cargo: exclude BoringSSL test files to reduce crate size
diff --git a/Cargo.toml b/Cargo.toml
index af6cf40..e841144 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,14 @@
 keywords = ["quic"]
 categories = [ "network-programming" ]
 license = "BSD-2-Clause"
+exclude = [
+    "deps/boringssl/crypto/**/*_test.txt",
+    "deps/boringssl/crypto/**/*_tests.txt",
+    "deps/boringssl/**/nist_cavp/*.txt",
+    "deps/boringssl/fuzz/*",
+    "deps/boringssl/ssl/test/runner/*",
+    "deps/boringssl/third_party/wycheproof_testvectors/*",
+]
 
 [build-dependencies]
 cmake = "0"