OptCached.java:44-51: Fix caching mechanism in {@link...

[0pdd]

The puzzle 2746-9394bf60 from #2746 has to be resolved:

eo/eo-maven-plugin/src/main/java/org/eolang/maven/optimization/OptCached.java

Lines 44 to 51 in 036be9f

	* @todo #2746:30min Fix caching mechanism in {@link OptCached}. Current
	* The last modified time of the files between stages may be different,
	* so it is not correct to do an equality comparison ({@code .equals(...)}).
	* The last modification time of the file at the current stage
	* must be less than or equal to the last modification time of file in cache at the next stage.
	* The following tests show that fetching from the cache doesn't work correctly:
	* - {@link OptCachedTest#returnsFromCacheCorrectProgram(Path path)},
	* - {@link OptCachedTest#returnsFromCacheButTimesSaveAndExecuteDifferent(Path path)}.

The puzzle was created by rultor on 17-Jan-24.

Estimate: 30 minutes, role: DEV.

If you have any technical questions, don't ask me, submit new tickets instead. The task will be "done" when the problem is fixed and the text of the puzzle is removed from the source code. Here is more about PDD and about me.

[Yanich96]

@maxonfjvipon assign me please

[0pdd]

@0pdd 2 puzzles #2820, #2821 are still not solved.