chore(website): Fix incompatibilities with Hugo 0.154 #51490

Job	Run time
changes / source	7s
changes / e2e_tests	0s
changes / int_tests	0s
Check Markdown	40s
Check code format	0s
VRL - Linux	0s
Check clippy	0s
Check scripts	0s
Check events	0s
Check that the 3rd-party license file is up to date	0s
Build VRL Playground	0s
Unit and Component Validation tests - x86_64-unknown-linux-gnu	0s
Check Cue docs	0s
Check Rust Docs	0s
Check Component Docs	0s
Test Suite	3s
	50s

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