feat: expose secrets for notification templates (#3455)

[eroznik]

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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.80%. Comparing base (8405f2e) to head (50880d6).
Report is 58 commits behind head on master.

❗ Current head 50880d6 differs from pull request most recent head 297c47c. Consider uploading reports for the commit 297c47c to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3466      +/-   ##
==========================================
+ Coverage   81.83%   82.80%   +0.96%     
==========================================
  Files         135      135              
  Lines       20688    17005    -3683     
==========================================
- Hits        16931    14081    -2850     
+ Misses       2883     2037     -846     
- Partials      874      887      +13     

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[github-actions]

Go Published Test Results

2 144 tests   2 144 ✅  2m 51s ⏱️
  119 suites      0 💤
    1 files        0 ❌

Results for commit 297c47c.

♻️ This comment has been updated with latest results.

[github-actions]

E2E Tests Published Test Results

  4 files    4 suites   3h 45m 59s ⏱️
110 tests  98 ✅  6 💤  6 ❌
452 runs  416 ✅ 24 💤 12 ❌

For more details on these failures, see this check.

Results for commit 297c47c.

♻️ This comment has been updated with latest results.

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
2.5% Duplication on New Code

See analysis details on SonarCloud