chore: moving to otel from opencensus #7287

Job	Run time
Unit test	7m 33s
Check codegen and manifest	1m 48s
Build and Test (1.25.8)	4m 25s
[Generator Resource Expansion] Build and Test	4m 26s
Build and Test (1.26.3)	3m 48s
Build and Test (1.27.1)	3m 50s
Test Gator	3m 43s
Build and Test (1.28.0)	3m 49s
[Helm] Build and Test (3.7.2, gatekeeper-system)	4m 18s
Lint	52s
[Helm] Build and Test (3.7.2, custom-namespace)	3m 57s
[Trivy] Scan for vulnerabilities	3m 54s
	46m 23s

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