Fix sync finished notice cancel

[gammazero]

• Fix a possible deadlock when canceling sync finished event notifications with unread notifications.
• Add unit test to test deadlock fix.
• Update libp2p to get fixes.

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.10 ⚠️

Comparison is base (82e2352) 51.23% compared to head (1325746) 51.13%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #20      +/-   ##
==========================================
- Coverage   51.23%   51.13%   -0.10%     
==========================================
  Files          56       56              
  Lines        4700     4705       +5     
==========================================
- Hits         2408     2406       -2     
- Misses       2033     2039       +6     
- Partials      259      260       +1     

Impacted Files	Coverage Δ
dagsync/subscriber.go	76.76% <100.00%> (+0.22%)	⬆️

... and 2 files with indirect coverage changes

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[github-actions]

Suggested version: v0.0.7

Comparing to: v0.0.6 (diff)

Changes in go.mod file(s):

(empty)

gorelease says:

# github.com/ipni/go-libipni/find/client/http
## compatible changes
(*DHashClient).FindAsync: added

# diagnostics
required module github.com/microcosm-cc/bluemonday@v1.0.1 retracted by module author: Retract older versions as only latest is to be depended upon

# summary
Suggested version: v0.1.0

gocompat says:

Your branch is up to date with 'origin/main'.

Cutting a Release (and modifying non-markdown files)

This PR is modifying both version.json and non-markdown files.
The Release Checker is not able to analyse files that are not checked in to main. This might cause the above analysis to be inaccurate.
Please consider performing all the code changes in a separate PR before cutting the release.

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