ci: skip autogenerated files from codespell

skipping running codespell on
the vendor directory iand go.sum
which we dont manually edit.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

Author: Madhu-1

.github/workflows/codespell.yaml

@@ -16,7 +16,7 @@ jobs:
       - name: codespell
         uses: codespell-project/actions-codespell@master
         with:
-          skip: .git
+          skip: .git,vendor,go.sum
           check_filenames: true
           # Add list of words to be ignored
           ignore_words_list: ExtraVersion,extraversion,ba