Block one more gadget type (commons-jelly, CVE-2020-11620)

[cowtowncoder]

Another gadget type(s) reported regarding class(es) of commons-jelly:commons-jelly. library.
See https://medium.com/@cowtowncoder/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062 for description of the general problem.

Mitre id: CVE-2020-11620
Reporter(s):

• r00t4dm from A-TEAM of Legendsec at Qi'anxin Group
• Maoxin Lin of Dbappsecurity Team

Fix will be included in:

• 2.9.10.4
• Does not affect 2.10.0 and later