Problem : Jupyter extension of VS Code installation from VSIX fails with an error 'not compatible with visualstudio code 1.55.2'
Solution : 1. install Jupyter extension version 2021.5 from an archive(VSIX hub: www.vsixhub.com/history/43174/).
or
2. install VS Code insider edition for a higher version.(above 1.56.0)
I tried a couple of 2021.6 version, but everything has been failed. When I get a 2021.5 version and it worked. it seems recent Jupyter extension's compatiblity check is set too high for a current VS Code which is 1.55.2(Stable edition)