modify to get local day of week

[hskimsky]

Pull Request type

• Bugfix
• Feature
• Refactoring (no functional changes, no api changes)
• Build related changes (Please run ./gradlew build --write-locks to refresh dependencies)
• Other (please describe):

NOTE: Please remember to run ./gradlew spotlessApply to fix any format violations.

Changes in this PR

When running ./gradlew build, the build fails because the value of the res variable is not "Thursday".

Because my default locale is Asia/Seoul, the value of the res variable is "목요일", not "Thursday".

Therefore, I modified it to get the local day of the week.

[jun-he]

@hskimsky will #57 resolve this problem as well?

[hskimsky]

@hskimsky will #57 resolve this problem as well?

I think #57 can also solve the same problem, and I think it's an easier and better solution.

[jun-he]

@hskimsky Thanks for the proposed solution. I will close this one as the issue has been fixed within SEL.