feat: reduce the intrinsics coverage for x86_64 intrinsics

Author: madhav-madhusoodanan

ci/intrinsic-test.sh

@@ -75,7 +75,7 @@ case ${TARGET} in
         TEST_CXX_COMPILER="clang++"
         TEST_RUNNER="${CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_RUNNER}"
         TEST_SKIP_INTRINSICS=crates/intrinsic-test/missing_x86.txt
-        : "${TEST_SAMPLE_INTRINSICS_PERCENTAGE:=30}"
+        : "${TEST_SAMPLE_INTRINSICS_PERCENTAGE:=20}"
         ;;
     *)
         ;;