fix(deps): update golang.org/x/exp digest to f9890c6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
golang.org/x/exp	require	digest	814bf88 -> f9890c6

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[renovate]

ℹ Artifact update notice

File name: grpc-eventstore/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):

• The go directive was updated for compatibility reasons

Details:

Package	Change
go	1.21 -> 1.23.6

File name: shape-app/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):

• The go directive was updated for compatibility reasons

Details:

Package	Change
go	1.21 -> 1.23.6