Update devcontainer with chromium dependencies

[Bestra]

When attempting to npm install && npm run test in a fresh codespace, we initially see an error related to a missing shared library:

26 04 2022 14:32:23.081:ERROR [launcher]: Cannot start ChromeHeadless
        /workspaces/paste-markdown/node_modules/chromium/lib/chromium/chrome-linux/chrome: error while loading shared libraries: libnss3.so: cannot open shared object file: No such file or directory

Running

ldd /workspaces/paste-markdown/node_modules/chromium/lib/chromium/chrome-linux/chrome | grep not

shows a list of libraries similar to that in dtolstyi/node-chromium#52 (comment)

        libnss3.so => not found
        libnssutil3.so => not found
        libsmime3.so => not found
        libnspr4.so => not found
        libatk-1.0.so.0 => not found
        libatk-bridge-2.0.so.0 => not found
        libcups.so.2 => not found
        libdrm.so.2 => not found
        libxkbcommon.so.0 => not found
        libXcomposite.so.1 => not found
        libXdamage.so.1 => not found
        libXfixes.so.3 => not found
        libXrandr.so.2 => not found
        libgbm.so.1 => not found
        libpango-1.0.so.0 => not found
        libcairo.so.2 => not found
        libasound.so.2 => not found
        libatspi.so.0 => not found

^^ This correlates pretty well to https://github.com/puppeteer/puppeteer/blob/main/docs/troubleshooting.md#chrome-headless-doesnt-launch-on-unix