Only added lines accepted, not changed lines

[pepa65]

Noticing that the code for checking 1 change only accept and added line, and not a changed line:

TLD_FILE=$(git diff --name-only upstream/main)
TLD_FILE=$(git diff --name-only upstream/main)
DIFF_LOG=$(diff <(git show upstream/main:$TLD_FILE) $TLD_FILE | grep ^[[:digit:]])
[[ $(echo $DIFF_LOG | wc -l) == 1 ]]
[[ $DIFF_LOG =~ ^[0-9]+a[0-9]+$ ]]

That list line should read: [[ $DIFF_LOG =~ ^[0-9]+[ac][0-9]+$ ]] in order for a changed line (# renew added) to pass the test.