[clang] [clang-scan-deps] Remove const from ModuleDeps loop to enable move. (PR #161109)

[Naveen Seth Hanig via cfe-commits]

naveen-seth wrote:

Ah I see, I've moved it to #155523 now (even though that is also NFC). Hope that’s fine anyway.
Otherwise I can add them to a more meaningful PR in the future.

https://github.com/llvm/llvm-project/pull/161109