Include 2020 year in Arm Copyright

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: I4d8b5c48c98658d014b6b220a1a37c389cd79778
diff --git a/job/tf-github-autoreply/github_pr_bot.py b/job/tf-github-autoreply/github_pr_bot.py
index b21da50..4540814 100755
--- a/job/tf-github-autoreply/github_pr_bot.py
+++ b/job/tf-github-autoreply/github_pr_bot.py
@@ -38,7 +38,7 @@
     """Reply to all new issues without a bot reply"""
     body = readfile("issue_comment.md")
     logging.info("Replying to new issues on {}/{}".format(repo.owner.login, repo.name))
-    for issue in repo.get_issues(since=datetime.datetime(2019, 10, 17, 12)):
+    for issue in repo.get_issues(since=datetime.datetime(2019-2020 10, 17, 12)):
         if not commented_already(issue.get_comments(), bots):
             logging.info("Repliyng to issue #{}: {}".format(issue.number, issue.title))
             if not dry_run: