feat: Apply rebranding for /security/oval

[britneywwc]

Done

• Rebrand /security/oval based on Design, no changes in copy doc
• Drive-by: Update /security/docker-images to use p-cta-block classes where necessary
• Note: Waiting for chart placeholder from design

QA

• Go to https://ubuntu-com-14734.demos.haus/security/oval
• Check that design matches Figma

Issue / Card

Fixes WD-12041

Screenshots

[If relevant, please include a screenshot.]

Help

QA steps - Commit guidelines

[webteam-app]

Demo

Jenkins

demos.haus

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.32%. Comparing base (a7e769a) to head (01eeb4d).
Report is 76 commits behind head on feature-security-bubble.

Additional details and impacted files

@@                   Coverage Diff                    @@
##           feature-security-bubble   #14734   +/-   ##
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  Coverage                    72.32%   72.32%           
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  Files                          120      120           
  Lines                         3404     3404           
  Branches                      1174     1174           
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  Hits                          2462     2462           
  Misses                         917      917           
  Partials                        25       25           

[mattea-turic]

thanks @britneywwc !!

for the hero:

• logo was a little cut off, so i added a new vers. here

for "How we use Ubuntu OVAL":

• the button looks to have too much padding(?), causing too much whitespace at the bottom of this section

for "Using Ubuntu’s OVAL data":

• could you add a <br> after "an" in the h5 "Scanning an Official Cloud Image" pls?

for 'Ubuntu OVAL data parameters":

• could you add 8px bottom padding (or if it's easier, 24px) to the table, so that the note message (Note: The above parameters...) sits a little lower and doesn't look to be a table row

for "How Ubuntu OVAL data works"

• i added in the old chart while we wait for the new one to be rebranded!

[mattea-turic]

All looks good aside from the diagram that I added to the assets server, which for some reason didn't include its container lol. I've added another one here

i'll +1 since this is simple change! :)

[immortalcodes]

LGTM, Suggestion for adding alt text to one of logos.