Fix release

This release contains some bug fixes, mainly for #881 regression affecting 3.18.10 & 3.18.11. Because all versions < 3.18.11 are vulnerable to the critical CVE-2021-44228 in log4j2 library, we still recommend all users to upgrade. Release notes below:

News:
#887: Upgrade to Log4j-2.17.0 in 3.x branch (Luís Nassif)
Fixes:
#881: Subitems > 16MB or exported to HTML reports not opened by analysis app [3.18.10 regression] (Luis Nassif)
#880: Exporting files to report fails depending on evidence type if it was moved (Luís Nassif)
#872: Aborting NullPointerException in DocThumbTask (Luís Nassif)