fix(deps): update module cloud.google.com/go/datastore to v1.21.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
cloud.google.com/go/datastore	v1.15.0 -> v1.21.0

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[renovate]

ℹ Artifact update notice

File name: bots/rss/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):

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

Details:

Package	Change
go	1.21 -> 1.24.0
cloud.google.com/go/secretmanager	v1.11.1 -> v1.14.7
cloud.google.com/go	v0.110.7 -> v0.121.6
cloud.google.com/go/compute	v1.23.0 -> v1.38.0
cloud.google.com/go/compute/metadata	v0.2.3 -> v0.8.0
github.com/golang/protobuf	v1.5.3 -> v1.5.4
github.com/google/go-cmp	v0.5.9 -> v0.7.0
github.com/google/s2a-go	v0.1.4 -> v0.1.9
github.com/googleapis/enterprise-certificate-proxy	v0.2.4 -> v0.3.6
github.com/googleapis/gax-go/v2	v2.12.0 -> v2.15.0
golang.org/x/crypto	v0.17.0 -> v0.41.0
golang.org/x/net	v0.17.0 -> v0.43.0
golang.org/x/oauth2	v0.8.0 -> v0.30.0
golang.org/x/sync	v0.2.0 -> v0.16.0
golang.org/x/sys	v0.15.0 -> v0.35.0
golang.org/x/text	v0.14.0 -> v0.28.0
google.golang.org/api	v0.128.0 -> v0.247.0
google.golang.org/appengine	v1.6.7 -> v1.6.8
google.golang.org/genproto	v0.0.0-20230821184602-ccc8af3d0e93 -> v0.0.0-20250603155806-513f23925822
google.golang.org/genproto/googleapis/api	v0.0.0-20230803162519-f966b187b2e5 -> v0.0.0-20250818200422-3122310a409c
google.golang.org/genproto/googleapis/rpc	v0.0.0-20230803162519-f966b187b2e5 -> v0.0.0-20250811230008-5f3141c8851a
google.golang.org/grpc	v1.57.1 -> v1.74.2
google.golang.org/protobuf	v1.33.0 -> v1.36.7

[renovate]

ℹ️ Artifact update notice

File name: bots/rss/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):

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

Details:

Package	Change
go	1.21 -> 1.24.0
cloud.google.com/go/secretmanager	v1.11.1 -> v1.14.7
cloud.google.com/go	v0.110.7 -> v0.121.6
cloud.google.com/go/compute	v1.23.0 -> v1.38.0
cloud.google.com/go/compute/metadata	v0.2.3 -> v0.8.0
github.com/golang/protobuf	v1.5.3 -> v1.5.4
github.com/google/go-cmp	v0.5.9 -> v0.7.0
github.com/google/s2a-go	v0.1.4 -> v0.1.9
github.com/googleapis/enterprise-certificate-proxy	v0.2.4 -> v0.3.6
github.com/googleapis/gax-go/v2	v2.12.0 -> v2.15.0
golang.org/x/crypto	v0.17.0 -> v0.41.0
golang.org/x/net	v0.17.0 -> v0.43.0
golang.org/x/oauth2	v0.8.0 -> v0.30.0
golang.org/x/sync	v0.2.0 -> v0.16.0
golang.org/x/sys	v0.15.0 -> v0.35.0
golang.org/x/text	v0.14.0 -> v0.28.0
google.golang.org/api	v0.128.0 -> v0.247.0
google.golang.org/appengine	v1.6.7 -> v1.6.8
google.golang.org/genproto	v0.0.0-20230821184602-ccc8af3d0e93 -> v0.0.0-20250603155806-513f23925822
google.golang.org/genproto/googleapis/api	v0.0.0-20230803162519-f966b187b2e5 -> v0.0.0-20250818200422-3122310a409c
google.golang.org/genproto/googleapis/rpc	v0.0.0-20230803162519-f966b187b2e5 -> v0.0.0-20250811230008-5f3141c8851a
google.golang.org/grpc	v1.57.1 -> v1.74.2
google.golang.org/protobuf	v1.33.0 -> v1.36.7