fix: cloudwatch metrics provider multiple dimensions

[modesvops]

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional with a list of types and scopes found here, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234".
• I've signed my commits with DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My builds are green. Try syncing with master if they are not.
• My organization is added to USERS.md.

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
78.9% Duplication

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[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (d27d285) 81.75% compared to head (6677040) 81.75%.
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2932   +/-   ##
=======================================
  Coverage   81.75%   81.75%           
=======================================
  Files         133      133           
  Lines       20336    20338    +2     
=======================================
+ Hits        16625    16627    +2     
  Misses       2855     2855           
  Partials      856      856           

Files Changed	Coverage Δ
metricproviders/cloudwatch/cloudwatch.go	73.45% <100.00%> (+0.47%)	⬆️

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[github-actions]

Go Published Test Results

2 033 tests   2 033 ✔️  2m 39s ⏱️
   118 suites         0 💤
       1 files           0 ❌

Results for commit 6677040.

[github-actions]

E2E Tests Published Test Results

    4 files      4 suites   3h 37m 36s ⏱️
102 tests   89 ✔️   6 💤 7 ❌
416 runs  384 ✔️ 24 💤 8 ❌

For more details on these failures, see this check.

Results for commit 6677040.