Bump go.opentelemetry.io/otel from 1.19.0 to 1.21.0

Bumps [go.opentelemetry.io/otel](https://github.com/open-telemetry/opentelemetry-go) from 1.19.0 to 1.21.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-go/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-go/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-go@v1.19.0...v1.21.0)

---
updated-dependencies:
- dependency-name: go.opentelemetry.io/otel
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -12,8 +12,8 @@ require (
 	github.com/insomniacslk/dhcp v0.0.0-20230908212754-65c27093e38a
 	github.com/tinkerbell/tink v0.9.0
 	github.com/tonglil/buflogr v1.0.1
-	go.opentelemetry.io/otel v1.19.0
-	go.opentelemetry.io/otel/trace v1.19.0
+	go.opentelemetry.io/otel v1.21.0
+	go.opentelemetry.io/otel/trace v1.21.0
 	golang.org/x/net v0.19.0
 	k8s.io/apimachinery v0.28.4
 	k8s.io/client-go v0.28.4
@@ -52,7 +52,7 @@ require (
 	github.com/u-root/uio v0.0.0-20230305220412-3e8cd9d6bf63 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.18.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.18.0 // indirect
-	go.opentelemetry.io/otel/metric v1.19.0 // indirect
+	go.opentelemetry.io/otel/metric v1.21.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.18.0 // indirect
 	go.opentelemetry.io/proto/otlp v1.0.0 // indirect
 	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect

go.sum

@@ -125,18 +125,18 @@ github.com/u-root/uio v0.0.0-20230305220412-3e8cd9d6bf63 h1:YcojQL98T/OO+rybuzn2
 github.com/u-root/uio v0.0.0-20230305220412-3e8cd9d6bf63/go.mod h1:eLL9Nub3yfAho7qB0MzZizFhTU2QkLeoVsWdHtDW264=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-go.opentelemetry.io/otel v1.19.0 h1:MuS/TNf4/j4IXsZuJegVzI1cwut7Qc00344rgH7p8bs=
-go.opentelemetry.io/otel v1.19.0/go.mod h1:i0QyjOq3UPoTzff0PJB2N66fb4S0+rSbSB15/oyH9fY=
+go.opentelemetry.io/otel v1.21.0 h1:hzLeKBZEL7Okw2mGzZ0cc4k/A7Fta0uoPgaJCr8fsFc=
+go.opentelemetry.io/otel v1.21.0/go.mod h1:QZzNPQPm1zLX4gZK4cMi+71eaorMSGT3A4znnUvNNEo=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.18.0 h1:IAtl+7gua134xcV3NieDhJHjjOVeJhXAnYf/0hswjUY=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.18.0/go.mod h1:w+pXobnBzh95MNIkeIuAKcHe/Uu/CX2PKIvBP6ipKRA=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.18.0 h1:yE32ay7mJG2leczfREEhoW3VfSZIvHaB+gvVo1o8DQ8=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.18.0/go.mod h1:G17FHPDLt74bCI7tJ4CMitEk4BXTYG4FW6XUpkPBXa4=
-go.opentelemetry.io/otel/metric v1.19.0 h1:aTzpGtV0ar9wlV4Sna9sdJyII5jTVJEvKETPiOKwvpE=
-go.opentelemetry.io/otel/metric v1.19.0/go.mod h1:L5rUsV9kM1IxCj1MmSdS+JQAcVm319EUrDVLrt7jqt8=
+go.opentelemetry.io/otel/metric v1.21.0 h1:tlYWfeo+Bocx5kLEloTjbcDwBuELRrIFxwdQ36PlJu4=
+go.opentelemetry.io/otel/metric v1.21.0/go.mod h1:o1p3CA8nNHW8j5yuQLdc1eeqEaPfzug24uvsyIEJRWM=
 go.opentelemetry.io/otel/sdk v1.18.0 h1:e3bAB0wB3MljH38sHzpV/qWrOTCFrdZF2ct9F8rBkcY=
 go.opentelemetry.io/otel/sdk v1.18.0/go.mod h1:1RCygWV7plY2KmdskZEDDBs4tJeHG92MdHZIluiYs/M=
-go.opentelemetry.io/otel/trace v1.19.0 h1:DFVQmlVbfVeOuBRrwdtaehRrWiL1JoVs9CPIQ1Dzxpg=
-go.opentelemetry.io/otel/trace v1.19.0/go.mod h1:mfaSyvGyEJEI0nyV2I4qhNQnbBOUUmYZpYojqMnX2vo=
+go.opentelemetry.io/otel/trace v1.21.0 h1:WD9i5gzvoUPuXIXH24ZNBudiarZDKuekPqi/E8fpfLc=
+go.opentelemetry.io/otel/trace v1.21.0/go.mod h1:LGbsEB0f9LGjN+OZaQQ26sohbOmiMR+BaslueVtS/qQ=
 go.opentelemetry.io/proto/otlp v1.0.0 h1:T0TX0tmXU8a3CbNXzEKGeU5mIVOdf0oykP+u2lIVU/I=
 go.opentelemetry.io/proto/otlp v1.0.0/go.mod h1:Sy6pihPLfYHkr3NkUbEhGHFhINUSI/v80hjKIs5JXpM=
 go.uber.org/goleak v1.2.1 h1:NBol2c7O1ZokfZ0LEU9K6Whx/KnwvepVetCUhtKja4A=