chore: update dependency kyma-project/istio to v1.26.2

[renovate]

This PR contains the following updates:

Package	Update	Change
kyma-project/istio	patch	1.26.1 → 1.26.2

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Release Notes

kyma-project/istio (kyma-project/istio)

v1.26.2

Compare Source

Fixed Bugs

• We've resolved an issue where the Istio controller used excessive memory during the workload restart phase. See #​1902.
• We've resolved an issue where the Istio controller restarted all proxies continuously when compatibility mode was enabled. See #​1939.

Versions

• Istio: 1.28.3
• Envoy: 1.36.5

Full changelog: kyma-project/istio@1.26.1...1.26.2

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