Bump postcss from 8.4.47 to 8.4.48 in /assets #13240

Job	Run time
Check common misspellings	24s
Check if the regression test criteria are met, store in the job output	1s
Elixir dev dependencies	29s
Generate project documentation	0s
Elixir test dependencies	30s
Npm dependencies	44s
Npm E2E dependencies	19s
Check if the integration test criteria are met, store in the job output	1s
Rebuild target branch dependencies	4m 17s
Test	1m 54s
Chromatic deployment	39s
End to end tests	13m 9s
Static Code Analysis	4m 41s
Regression tests	0s
Run FE tests	1m 50s
Integration tests	0s
API bc check (V1)	51s
API bc check (V2)	55s
Build the docker image for the demo environment	0s
Commit to OBS to generate container image	0s
Build and push container images	0s
Commit to OBS to generate RPM package	0s
Deploy updated images to the demo environment	0s
Use photofinish to push mock data to the demo environment	0s
	30m 44s

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