Do not use toolchain directive

[pellared]

I think that go 1.21.0 is required for the bump and it should not be a problem..

However, I do not think we need to add toolchain go1.22.5. I think it would be better to avoid toolchain consistently in all our Go modules.

Originally posted by @pellared in #5643 (comment)

We should have have some "linter" that would detect such changes.

[pulin-dani]

is this already fixed and merged?

[pellared]

is this already fixed and merged?

From issue description:

We should have have some "linter" that would detect such changes

[MrAlias]

With the upgrade of Go to 1.23, the use of toolchain seems to be required: #5720 (comment)

[dmathieu]

Closing this, as with Go 1.23, the toolchain directive is required and added automatically.

[pellared]

Closing this, as with Go 1.23, the toolchain directive is required and added automatically.

It is still not required. See: #5784

There are more people complaining on the go get and go mod tidy behavior so maybe eventually they will stop automatically adding the toolchain directive. See: golang/go#65847

[bobrik]

Dependabot update of opentelemetry packages added go toolchain for me:

• build(deps): bump the opentelemetry group with 19 updates cloudflare/ebpf_exporter#471

It also fails to build and requires go mod tidy, which changes it further:

$ git diff
diff --git a/go.mod b/go.mod
index 86aefc2..2a91bad 100644
--- a/go.mod
+++ b/go.mod
@@ -1,7 +1,8 @@
 module github.com/cloudflare/ebpf_exporter/v2

-go 1.21
-toolchain go1.22.5
+go 1.22
+
+toolchain go1.23.1

No other dependency bump required this.