Using URI instead of URL for file lookup

[fvgh]

Using URI instead of URL for file lookup avoiding URL escape characters in path.

This change in eclipse-base fixes #401.
Since only a minor bug fix has been provided, only the patch version has been incremented.

All Spotless Eclipse based formatters are affected by #401. Hence their all dependency lock files require an update.

Note that the release date in the change log needs to be set.
Unit tests of the private static function are considered unnecessary.
Code change has been validated manually.

[nedtwigg]

Looks great! I'll publish 3.1.1 and update the date.

[fvgh]

As stated above, I would recommend to replace all spotless-eclipse-base:3.1.0 occurrences in the existing lock-files by spotless-eclipse-base:3.1.1.

A back-port of the patch for spotless-eclipse-base:3.0.0 is possible if requested.

Keep in mind that the minor version spotless-eclipse-base signals incompatibilities. Hence a replacement of spotless-eclipse-base:3.0.0 by spotless-eclipse-base:3.1.1 could cause run-time errors and is discouraged.

@nedtwigg Shall I do the lock-file update? As part of this branch/PR?

[nedtwigg]

3.1.1 published. I don't see a need for a back-port, but I'm happy to publish anything you would like published. I would do the lock-file update within this PR.

[fvgh]

Checked code changes since spotless-eclipse-base:3.0.0. Changes of spotless-eclipse-base:3.1.1 are compatible with version spotless-eclipse-base:3.0.0 and only depend on spotless-lib improvements.

Hence all spotless-eclipse-base version have been incremented to 3.1.1.

[nedtwigg]

Looks great to me! Merge at will :)

[nedtwigg]

Released in x.23.1