[BUILD] Close stale PRs

Closes #13794
Closes #18474
Closes #18897
Closes #18978
Closes #19152
Closes #19238
Closes #19295
Closes #19334
Closes #19335
Closes #19347
Closes #19236
Closes #19244
Closes #19300
Closes #19315
Closes #19356
Closes #15009
Closes #18253

Author: hyukjinkwon <gurwls223@gmail.com>

Closes #19348 from HyukjinKwon/stale-prs.