fix(deps): update module github.com/ibm/go-sdk-core/v5 to v5.21.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/IBM/go-sdk-core/v5	v5.21.0 → v5.21.2

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Release Notes

IBM/go-sdk-core (github.com/IBM/go-sdk-core/v5)

v5.21.2

Compare Source

Bug Fixes

• build: bump depedency versions (#​262) (038b2b7)

v5.21.1

Compare Source

Bug Fixes

• build: bump version to avoid CVEs (#​260) (6ab9444)

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[renovate]

ℹ️ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 11 additional dependencies were updated
• The go directive was updated for compatibility reasons

Details:

Package	Change
go	1.23.2 -> 1.24.0
github.com/go-openapi/strfmt	v0.23.0 -> v0.25.0
github.com/gabriel-vasile/mimetype	v1.4.8 -> v1.4.11
github.com/go-openapi/errors	v0.22.0 -> v0.22.4
github.com/go-playground/validator/v10	v10.26.0 -> v10.28.0
github.com/hashicorp/go-retryablehttp	v0.7.7 -> v0.7.8
go.mongodb.org/mongo-driver	v1.17.2 -> v1.17.6
golang.org/x/crypto	v0.41.0 -> v0.45.0
golang.org/x/net	v0.43.0 -> v0.47.0
golang.org/x/sys	v0.35.0 -> v0.38.0
golang.org/x/text	v0.28.0 -> v0.31.0
sigs.k8s.io/yaml	v1.4.0 -> v1.6.0