Auto merge of #6238 - bundler:seg-outdated-fips, r=olleolleolle
Auto merge of #6238 - bundler:seg-outdated-fips, r=olleolleolle

[CLI] Skip the outdated bundler check when MD5 is not available

### What was the end-user problem that led to this PR?

The problem was Bundler would try to do the outdated version check on FIPS systems, leading to an exception.

Closes #6032.

### What was your diagnosis of the problem?

My diagnosis was we needed to skip the check when MD5 is unavailable.

### Why did you choose this fix out of the possible options?

I chose this fix because using `#available?` would make network requests, which is not acceptable.

dilumnavanjana/bundler,mvz/bundler,dilumnavanjana/bundler,bundler/bundler,mvz/bundler,bundler/bundler