Update sbt to 1.6.1

[scala-steward]

Updates org.scala-sbt:sbt from 1.6.0 to 1.6.1.
GitHub Release Notes - Version Diff

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

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Ignore future updates

Add this to your .scala-steward.conf file to ignore future updates of this dependency:

updates.ignore = [ { groupId = "org.scala-sbt", artifactId = "sbt" } ]

labels: library-update, early-semver-patch, semver-spec-patch, commit-count:1

[codecov-commenter]

Codecov Report

Merging #1044 (3c5b08a) into develop (9bec228) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1044      +/-   ##
===========================================
- Coverage    89.59%   89.58%   -0.02%     
===========================================
  Files          124      124              
  Lines         9912     9912              
  Branches       509      509              
===========================================
- Hits          8881     8880       -1     
- Misses        1031     1032       +1     

Impacted Files	Coverage Δ
...rc/main/scala/com/twitter/algebird/SGDMonoid.scala	48.27% <0.00%> (-3.45%)	⬇️
.../main/scala/com/twitter/algebird/BloomFilter.scala	92.92% <0.00%> (-0.89%)	⬇️
.../scala/com/twitter/algebird/immutable/BitSet.scala	96.57% <0.00%> (-0.43%)	⬇️
.../main/scala/com/twitter/algebird/HyperLogLog.scala	90.04% <0.00%> (+0.43%)	⬆️
...src/main/scala/com/twitter/algebird/Interval.scala	81.73% <0.00%> (+2.60%)	⬆️

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