Github CI cache update

[jakeheke75]

Hello experts, it is stated in the cache action documentation that the cache is immutable and cannot be updated.
Say that in the current cache I have 10 packages. If I change my conanfile.py and I update only one dependendcy package, is there any way to avoid Github to rebuild all the 10 packages even if I changed only one of them? Any workaround/third party tool to save build time and keep the cache for the 9 packages that have not been changed?
Thank you in advance for your help.