Here is the happy news for all bloggers from Kerala. Yes, official google representatives has already confirmed that they are currently working on Malayalam language for Adsense.
Last month, in September 2019, they launched Marathi and Malayalam language support is on their roadmap and is expected to be launched around January 2020.
Currently only few large players has been whitelisted to use Adsense on Malayalam language websites. Hope it will be open to all Malayalam websites.