[ALAS-2020-1416] Amazon Linux AMI 2014.03 - ALAS-2020-1416: medium priority package update for ruby20

Package updates are available for Amazon Linux AMI that fix the following vulnerabilities:
CVE-2020-10663:
The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent.
1827500: CVE-2020-10663 rubygem-json: Unsafe Object Creation Vulnerability in JSON

CVE-2018-16396:
An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.
1643089: CVE-2018-16396 ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives
1643089:
CVE-2018-16396 ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives