[cli] Log Secret Decryption events when using 3rd party secrets + service

[stack72]

For users who use the Pulumi Service for their state BUT a 3rd party
secrets provider, we now log when that secret decryption has happened.

We have 2 forms of logs:

• single secret when a user uses pulumi config get x --show-secrets
• batch decryption for when a user runs a stack export or config list

The API logs to request are fire and forget. The API response is a 204
so we don't need to do anything with the response.

Description

Fixes # (issue)

Checklist

• I have added tests that prove my fix is effective or that my feature works

• I have updated the CHANGELOG-PENDING file with my change

• Yes, there are changes in this PR that warrants bumping the Pulumi Service API version

[codecov]

Codecov Report

Merging #8563 (d25e81b) into master (ee81da2) will decrease coverage by 18.60%.
The diff coverage is 0.00%.

❗ Current head d25e81b differs from pull request most recent head 94bebe0. Consider uploading reports for the commit 94bebe0 to get more accurate results

@@             Coverage Diff             @@
##           master    #8563       +/-   ##
===========================================
- Coverage   58.81%   40.20%   -18.61%     
===========================================
  Files         634      627        -7     
  Lines       97038    94839     -2199     
  Branches     1378     1378               
===========================================
- Hits        57076    38134    -18942     
- Misses      36711    54065    +17354     
+ Partials     3251     2640      -611     

Impacted Files	Coverage Δ
pkg/backend/httpstate/client/client.go	36.87% <0.00%> (-0.91%)	⬇️
pkg/cmd/pulumi/config.go	35.31% <0.00%> (-0.26%)	⬇️
pkg/cmd/pulumi/stack.go	20.74% <0.00%> (-0.27%)	⬇️
pkg/cmd/pulumi/stack_export.go	50.56% <0.00%> (-1.77%)	⬇️
pkg/cmd/pulumi/stack_history.go	19.49% <0.00%> (-0.38%)	⬇️
pkg/cmd/pulumi/stack_output.go	27.27% <0.00%> (-1.11%)	⬇️
pkg/cmd/pulumi/util.go	38.72% <0.00%> (-2.42%)	⬇️
pkg/codegen/docs.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/codegen/go/gen_spill.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/codegen/dotnet/templates.go	0.00% <0.00%> (-100.00%)	⬇️
... and 167 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 664ed0e...94bebe0. Read the comment docs.

[justinvp]

LGTM