Update Elixir deps to latest versions

[alco]

The main thing we want here is the latest version of otel_metric_exporter which includes fixes for three painful bugs.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.62%. Comparing base (38f550c) to head (5c30132).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4255      +/-   ##
==========================================
+ Coverage   64.61%   67.62%   +3.00%     
==========================================
  Files         144       15     -129     
  Lines       19308      559   -18749     
  Branches     4747        0    -4747     
==========================================
- Hits        12476      378   -12098     
+ Misses       6829      181    -6648     
+ Partials        3        0       -3     

Flag	Coverage Δ
electric-telemetry	67.62% <ø> (?)
elixir	67.62% <ø> (?)
packages/agents	?
packages/agents-runtime	?
packages/agents-server	?
packages/agents-server-ui	?
packages/electric-ax	?
packages/experimental	?
packages/react-hooks	?
packages/start	?
packages/typescript-client	?
packages/y-electric	?
typescript	?
unit-tests	67.62% <ø> (+3.00%)	⬆️

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