default or selected kernelversion does not have config value CONFIG_SECURITY_CAPABILITIES.
Result is shown for kernelversion 5.4.123

Default Linux Capabilities

modulename: commoncap.ko

configname: CONFIG_SECURITY_CAPABILITIES

Linux Kernel Configuration
└─>Security options
└─>Default Linux Capabilities
In linux kernel since version 2.6.12  
This enables the "default" Linux capabilities functionality.
If you are unsure how to answer this question, answer Y.

source code:
depends
CONFIG_SECURITY