Hey there!
I noticed that the year and name of the copyright owner in your LICENSE.txt file is not filled out. I am no license expert and have no idea if that has any implications on the spring-boot license. Just wanted to mention this :) Probably a <5min fix.
Here is the appendix from your LICENSE.txt file. Here you can see that Copyright {yyyy} {name of copyright owner} is not filled out
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright {yyyy} {name of copyright owner}