chore: update ipld-core and serde_ipld_dagcbor

[rvagg]

Adds support for default fields by being less strict up-front when decoding maps and lists and allowing the visitors to determine what/how to consume the tokens.

I had a bit of trouble using cargo commands to make this happen, particularly to get ipld/encoding/Cargo.toml updated, so I ended up just bumping the numbers manually and doing cargo build to get Cargo.lock to update. So I'd like to know what the proper way would be to do this.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.59%. Comparing base (525faea) to head (3357e3f).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2104      +/-   ##
==========================================
- Coverage   75.96%   74.59%   -1.38%     
==========================================
  Files         154      153       -1     
  Lines       15771    15148     -623     
==========================================
- Hits        11980    11299     -681     
- Misses       3791     3849      +58     

see 19 files with indirect coverage changes

[Stebalien]

I usually edit the files manually.

cargo update ipld-core won't work because that just updates the lock file, not the requirement specified in the cargo.toml file.

There's a cargo upgrade command in the cargo-edit package for managing dependencies in Cargo.toml files but... that's tricky to use (it tends to upgrade everything) and I honestly don't like it unless I need to batch-upgrade a bunch of packages.