Merge pull request #6585 from sylvestre/fuzz-cksum2

 fuzzing: add a new fuzzer for cksum

Author: sylvestre

.github/workflows/fuzzing.yml

@@ -57,6 +57,7 @@ jobs:
           - { name: fuzz_split, should_pass: false }
           - { name: fuzz_tr, should_pass: false }
           - { name: fuzz_env, should_pass: false }
+          - { name: fuzz_cksum, should_pass: false }
           - { name: fuzz_parse_glob, should_pass: true }
           - { name: fuzz_parse_size, should_pass: true }
           - { name: fuzz_parse_time, should_pass: true }