update to probot v10 - take 2

[soberstadt]

This was merged into master with #14, but it caused this error:

{
    "errorType": "Runtime.ImportModuleError",
    "errorMessage": "Error: Cannot find module 'probot/lib/resolver'\nRequire stack:\n- /var/task/node_modules/@probot/serverless-lambda/index.js\n- /var/task/src/handlers.js\n- /var/runtime/UserFunction.js\n- /var/runtime/index.js",
    "stack": [
        "Runtime.ImportModuleError: Error: Cannot find module 'probot/lib/resolver'",
        "Require stack:",
        "- /var/task/node_modules/@probot/serverless-lambda/index.js",
        "- /var/task/src/handlers.js",
        "- /var/runtime/UserFunction.js",
        "- /var/runtime/index.js",
        "    at _loadUserApp (/var/runtime/UserFunction.js:100:13)",
        "    at Object.module.exports.load (/var/runtime/UserFunction.js:140:17)",
        "    at Object.<anonymous> (/var/runtime/index.js:43:30)",
        "    at Module._compile (internal/modules/cjs/loader.js:1138:30)",
        "    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)",
        "    at Module.load (internal/modules/cjs/loader.js:986:32)",
        "    at Function.Module._load (internal/modules/cjs/loader.js:879:14)",
        "    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)",
        "    at internal/main/run_main_module.js:17:47"
    ]
}

[soberstadt]

This is blocked by probot/adapter-aws-lambda-serverless#43

[stage-branch-merger]

I see you added the "On Staging" label, I'll get this merged to the staging branch!

[soberstadt]

This might be a good idea, but I think it's not a good use of my last few days to try to get this working.