Fix posix issue

[jburel]

2 tests are currently failing on Windows see #416
with the error

java.lang.UnsupportedOperationException: 'posix:permissions' not supported as initial attribute
    	at sun.nio.fs.WindowsSecurityDescriptor.fromAttribute(WindowsSecurityDescriptor.java:358)
    	at sun.nio.fs.WindowsFileSystemProvider.createDirectory(WindowsFileSystemProvider.java:492)
    	at java.nio.file.Files.createDirectory(Files.java:674)
    	at java.nio.file.TempFileHelper.create(TempFileHelper.java:136)
    	at java.nio.file.TempFileHelper.createTempDirectory(TempFileHelper.java:173)
    	at java.nio.file.Files.createTempDirectory(Files.java:950)
    	at com.google.common.io.TempFileCreator$JavaNioCreator.createTempDir(TempFileCreator.java:102)
    	at com.google.common.io.Files.createTempDir(Files.java:439)

This PR replaces the usage of com.google.common.io.Files directly by java.nio.file.Files.
This PR is required to release a new version of omero-insigth

[dominikl]

Trying to test this with the Insight merge build, but can't run it. Any ideas? Thought it might just be on OSX, but also got the same on Linux VM, running Java 11:

~/Downloads/OMERO.insight-5.8.4-SNAPSHOT/bin$ ./omero-insight
Error: LinkageError occurred while loading main class org.openmicroscopy.shoola.Main
	java.lang.ExceptionInInitializerError: null

~/Downloads/OMERO.insight-5.8.4-SNAPSHOT/bin$ java --version
openjdk 11.0.21 2023-10-17
OpenJDK Runtime Environment (build 11.0.21+9)
OpenJDK 64-Bit Server VM (build 11.0.21+9, mixed mode)

[dominikl]

I'll just build/run it from your branch for now.

[dominikl]

Looks good to me 👍 Tested with a local build from the branch. Download image and attach a local file. I think that's two use cases this code would be used.

[pwalczysko]

Tested download and upload of a file with @dominikl 's local build from this PR. I have the same problem as @dominikl with the merge-ci artifact.

lgtm and the test is green

[jburel]

Maybe a problem with merge-ci. Maybe some PR that should not be included are included. We have seen that previously