Bump bbolt to v1.3.7

[ahrtr]

Signed-off-by: Benjamin Wang wachao@vmware.com

Please read https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md#contribution-flow.

[ahrtr]

In principle the bbolt release-1.3 will only accept security&bug fixes, and will bump v1.3.7 for etcd release-3.3 and 3.5 as well.

The bbolt master(1.4.0) will only be integrated with etcd main(3.6.0).

cc @ptabor @serathius @spzala

[codecov-commenter]

Codecov Report

Merging #15221 (2298949) into main (aba0f91) will decrease coverage by 0.15%.
The diff coverage is n/a.

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@@            Coverage Diff             @@
##             main   #15221      +/-   ##
==========================================
- Coverage   74.71%   74.56%   -0.15%     
==========================================
  Files         415      415              
  Lines       34317    34317              
==========================================
- Hits        25640    25590      -50     
- Misses       7040     7080      +40     
- Partials     1637     1647      +10     

Flag	Coverage Δ
all	74.56% <ø> (-0.15%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
client/v3/namespace/watch.go	87.87% <0.00%> (-6.07%)	⬇️
client/v3/concurrency/mutex.go	61.03% <0.00%> (-5.20%)	⬇️
server/storage/mvcc/watchable_store.go	84.94% <0.00%> (-4.66%)	⬇️
client/v3/concurrency/session.go	85.10% <0.00%> (-4.26%)	⬇️
server/etcdserver/api/rafthttp/msgappv2_codec.go	67.82% <0.00%> (-3.48%)	⬇️
server/etcdserver/api/v3rpc/util.go	70.96% <0.00%> (-3.23%)	⬇️
server/etcdserver/cluster_util.go	70.35% <0.00%> (-3.17%)	⬇️
server/proxy/grpcproxy/watch.go	93.64% <0.00%> (-2.90%)	⬇️
client/v3/experimental/recipes/key.go	75.34% <0.00%> (-2.74%)	⬇️
server/etcdserver/api/rafthttp/peer.go	85.06% <0.00%> (-1.95%)	⬇️
... and 14 more

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