github actions: Update interdiff for yet more fuzzy diffing fixes

-Fixed a segfault when there are only rejected hunks
-Fixed related code changes getting split into separate hunks when they are
 fewer than context*2 lines apart (i.e., 6 lines), now they are grouped
 together in the same hunk for much better readability
-Fixed remaining edge cases where spurious added or deleted code blocks
 would appear in the output due to rejected hunks, output is pristine now

Author: kerneltoast

.github/workflows/validate-kernel-commits.yml

@@ -94,7 +94,7 @@ jobs:
 
       - name: Clone and build custom patchutils
         run: |
-          git clone https://github.com/kerneltoast/patchutils.git --depth=1 --revision=01efe36a942fa82ae0fde188d68aaf2294685f7a
+          git clone https://github.com/kerneltoast/patchutils.git --depth=1 --revision=60a60b3909d0e29c0ff286f6a73de4168977b097
           cd patchutils
           ./bootstrap
           ./configure