meta/dump: remove secret key

[SandyXSD]

No description provided.

[codecov-commenter]

Codecov Report

Merging #1569 (c1fe0c4) into main (9e8de01) will decrease coverage by 0.26%.
The diff coverage is 88.88%.

@@            Coverage Diff             @@
##             main    #1569      +/-   ##
==========================================
- Coverage   61.28%   61.02%   -0.27%     
==========================================
  Files         133      133              
  Lines       22365    22379      +14     
==========================================
- Hits        13706    13656      -50     
- Misses       7103     7157      +54     
- Partials     1556     1566      +10     

Impacted Files	Coverage Δ
cmd/format.go	59.66% <ø> (ø)
cmd/status.go	72.72% <ø> (ø)
pkg/meta/dump.go	75.59% <ø> (ø)
cmd/load.go	75.00% <60.00%> (-2.42%)	⬇️
cmd/destroy.go	14.28% <100.00%> (ø)
pkg/meta/redis.go	72.28% <100.00%> (-0.19%)	⬇️
pkg/meta/sql.go	66.77% <100.00%> (-0.16%)	⬇️
pkg/meta/tkv.go	76.12% <100.00%> (+0.04%)	⬆️
pkg/chunk/utils_unix.go	73.33% <0.00%> (-20.00%)	⬇️
pkg/fuse/context.go	56.75% <0.00%> (-10.82%)	⬇️
... and 6 more

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