disable caching on integration details endpoint

[mdtro]

The details and configuration pages of integrations can potentially contain sensitive data. This instructs the client browser to not cache the responses.

This is a best effort at preventing this data from being cached. Browsers will generally honor this, but proxy devices between the client and server are free to ignore the cache header and cache the responses (as they often do).

Ticket: INFO-161

[codecov]

Codecov Report

Merging #48728 (0dcfbb9) into master (df37683) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #48728      +/-   ##
==========================================
- Coverage   80.97%   80.96%   -0.01%     
==========================================
  Files        4781     4781              
  Lines      201897   201908      +11     
  Branches    11449    11449              
==========================================
- Hits       163484   163482       -2     
- Misses      38158    38171      +13     
  Partials      255      255              

Impacted Files	Coverage Δ
...e/transactionSummary/transactionEvents/content.tsx	78.78% <ø> (ø)
.../integrations/organization_integrations/details.py	92.64% <100.00%> (+0.58%)	⬆️

... and 4 files with indirect coverage changes