Update aws-lambda-cpp to 0.2.7 - #67

Unrelated but when I ran update_deps.sh the download for curl was broken. It seems like it works when the periods in the version string are replaced with underscores in the url

https://github.com/curl/curl/archive/curl-7.78.0.tar.gz - broken
https://github.com/curl/curl/archive/curl-7_78_0.tar.gz - working

EDIT: It does seem like the second url is pointing to a different archive than what's checked into git. What's in git seems to be the archive at https://github.com/curl/curl/releases/download/curl-7_78_0/curl-7.78.0.tar.gz

Unrelated but when I ran update_deps.sh the download for curl was broken. It seems like it works when the periods in the version string are replaced with underscores in the url

https://github.com/curl/curl/archive/curl-7.78.0.tar.gz - broken https://github.com/curl/curl/archive/curl-7_78_0.tar.gz - working

EDIT: It does seem like the second url is pointing to a different archive than what's checked into git. What's in git seems to be the archive at https://github.com/curl/curl/releases/download/curl-7_78_0/curl-7.78.0.tar.gz

Thanks for pointing out, it's been addressed.

Thank you for your contribution! It looks like deps/versions is conflicting with a recent libcurl update, would you mind resolving the conflict?

@zsombor-balogh resolved the conflict

Build errors seem to be related to this
awslabs/aws-lambda-cpp#124