feat(ws): Upgrade Go to 1.24 - tensorboard-controller component

[mkoushni]

Goal

This PR updates the required Go version for the tensorboard-controller component to Go 1.24.x. This change is necessary to maintain compatibility with updated Kubernetes client libraries and ensure the component is built with current, supported security patches.

Changes Made

Updated the go.mod file to specify go 1.24.

Synchronized dependencies via go mod tidy and go mod vendor to lock in compatible library versions (including necessary updates to transitive dependencies like golang.org/x/text, etc.).

[google-oss-prow]

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[mkoushni]

/assign @mkoushni

[liavweiss]

Thank you, Marina. In addition to the review comments, please include the go.sum file in the PR as well.
This file is important for validating module dependencies and ensuring consistent, reproducible builds across different environments.

[liavweiss]

I think we can copy go.mod and go.sum first, then run go mod download, and only after that copy the rest of the source
This preserves Docker layer caching: dependencies are downloaded only when the module files change, not every time source code changes. It significantly speeds up builds.

# Copy only Go module files first for better layer caching
COPY tensorboard-controller/go.mod tensorboard-controller/go.sum ./
# Download dependencies based on mod files
RUN go mod download
# Now copy the full source
COPY tensorboard-controller/ ./

[liavweiss]

I think the copy of the compiled binary should be before switching to the non-root user
This aligns with standard Docker conventions and avoids permission or ownership ambiguity in the final image.

Suggested change

	COPY --from=builder /manager /manager
	COPY --from=builder /manager /manager
	USER 65532:65532