Bump go.opentelemetry.io/collector/extension/extensionauth from 1.42.0 to 1.43.0 #6108

Job	Run time
Performance Tests	12m 25s
Unit Tests	7m 43s
Unit tests with race condition detection	8m 5s
Build Unsigned Snapshot	6m 43s
Lint	7m 28s
Proxy Sanity Check	-1s
Upgrade Tests (redhatenterprise, 9)	4m 16s
Integration Tests (alpine, 3.22)	6m 43s
Integration Tests (ubuntu, 24.04)	7m 3s
Upgrade Tests (ubuntu, 24.04)	3m 29s
Upgrade Tests (alpine, 3.22)	3m 58s
Integration Tests (redhatenterprise, 9)	6m 50s
Integration Tests - Official Plus Images	0s
Metrics Integration Tests - Official OSS Images	0s
Metrics Integration Tests - Official Plus Images	0s
Integration Tests - Official OSS Images	0s
Load Tests	0s
	1h 14m 42s

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