Use newer cake version to avoid special handling of `-SymbolPackageFormat snupkg`

[mikkelbu]

Looks like it will be supported from the next version - cake-build/cake#3331

Originally posted by @mikkelbu in #957 (comment)

[CharliePoole]

Depends on #1047

[CharliePoole]

This issue has been resolved in version 3.13.1

The release is available on:
GitHub.
NuGet packages are also available NuGet.org and
Chocolatey Packages may be found at Chocolatey.org