CI: set reviewdog golangci-lint go version

[cce]

Summary

The reviewdog runs for golangci-lint have recently been crashing with the error panic: load embedded ruleguard rules: rules/rules.go:13: can't load fmt and it seems pinning the Go version fixes it.

This also fixes two lint errors that snuck through recently.

Test Plan

Reviewdog golangci-lint should run without crashing

[codecov]

Codecov Report

Merging #5196 (9591201) into master (ae33119) will decrease coverage by 1.65%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #5196      +/-   ##
==========================================
- Coverage   53.55%   51.91%   -1.65%     
==========================================
  Files         439      439              
  Lines       55012    55012              
==========================================
- Hits        29463    28560     -903     
- Misses      23270    24122     +852     
- Partials     2279     2330      +51     

Impacted Files	Coverage Δ
logging/telemetryspec/metric.go	81.91% <ø> (ø)
ledger/internal/appcow.go	67.32% <100.00%> (-7.61%)	⬇️

... and 88 files with indirect coverage changes

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[winder]

Seems fine, but this wouldn't fetch the minor version. Is that important?

The Indexer version of this file seems to have diverged quite a bit. It uses a separate step in the job to install go