ci(track): bump upload-charm action 2.4.0 -> 2.6.2 #1021

Job	Run time
Publish Charm / Generate the Charm Matrix	2s
Run Tests / Integration Test (1.27-strict/stable, integration)	25m 54s
Run Tests / Observability Integration Test (1.25-strict/stable)	26m 44s
Run Tests / Integration Test (1.27-strict/stable, integration-tls-provider)	25m 30s
Run Tests / Observability Integration Test (1.26-strict/stable)	27m 3s
Run Tests / Integration Test (1.27-strict/stable, integration-tls-secret)	25m 52s
Run Tests / Lint Code (pilot)	57s
Run Tests / Integration Test (1.30-strict/stable, integration)	25m 36s
Run Tests / Unit Test (pilot)	58s
Run Tests / Lint Code (gateway)	54s
Run Tests / Integration Test (1.30-strict/stable, integration-tls-provider)	25m 47s
Run Tests / Unit Test (gateway)	36s
Run Tests / Integration Test (1.30-strict/stable, integration-tls-secret)	25m 55s
Run Tests / Check libraries (istio-gateway) / Check libraries	2s
Run Tests / Check libraries (istio-pilot) / Check libraries	32s
Run Tests / Check libraries (istio-gateway) / Lint	21s
Run Tests / Check libraries (istio-pilot) / Lint	11s
Publish Charm / Publish Charm (./charms/istio-pilot)	18m 34s
Publish Charm / Publish Charm (./charms/istio-gateway)	3m 28s
	3h 54m 56s

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