treewide: add gofmt linter

Change-Id: Ic0d8450b46790c4dc797b117634227be9a48de01
Reviewed-on: https://review.monogon.dev/c/monogon/+/3827
Reviewed-by: Leopold Schabel <leo@monogon.tech>
Tested-by: Jenkins CI
diff --git a/go.mod b/go.mod
index e99fe47..c3b00f0 100644
--- a/go.mod
+++ b/go.mod
@@ -73,6 +73,7 @@
 	github.com/gdamore/tcell/v2 v2.7.4
 	github.com/go-delve/delve v1.8.2
 	github.com/golang-migrate/migrate/v4 v4.15.2
+	github.com/golangci/gofmt v0.0.0-20250106114630-d62b90e6713d
 	github.com/google/cel-go v0.22.0
 	github.com/google/certificate-transparency-go v1.1.2
 	github.com/google/go-cmp v0.6.0
@@ -123,14 +124,14 @@
 	go.uber.org/multierr v1.11.0
 	go.uber.org/zap v1.27.0
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba
-	golang.org/x/crypto v0.28.0
-	golang.org/x/net v0.30.0
-	golang.org/x/sync v0.8.0
-	golang.org/x/sys v0.27.0
-	golang.org/x/term v0.25.0
-	golang.org/x/text v0.19.0
+	golang.org/x/crypto v0.30.0
+	golang.org/x/net v0.32.0
+	golang.org/x/sync v0.10.0
+	golang.org/x/sys v0.28.0
+	golang.org/x/term v0.27.0
+	golang.org/x/text v0.21.0
 	golang.org/x/time v0.7.0
-	golang.org/x/tools v0.26.0
+	golang.org/x/tools v0.28.0
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20220208144051-fde48d68ee68
 	google.golang.org/api v0.169.0
 	google.golang.org/genproto/googleapis/api v0.0.0-20241007155032-5fefd90f89a9
@@ -357,6 +358,7 @@
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/riza-io/grpc-go v0.2.0 // indirect
 	github.com/robfig/cron/v3 v3.0.1 // indirect
+	github.com/rogpeppe/go-internal v1.13.1 // indirect
 	github.com/rs/cors v1.8.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/safchain/ethtool v0.5.9 // indirect
@@ -404,7 +406,7 @@
 	golang.org/x/arch v0.3.0 // indirect
 	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
 	golang.org/x/exp/typeparams v0.0.0-20231108232855-2478ac86f678 // indirect
-	golang.org/x/mod v0.21.0 // indirect
+	golang.org/x/mod v0.22.0 // indirect
 	golang.org/x/oauth2 v0.23.0 // indirect
 	golang.zx2c4.com/wireguard v0.0.0-20220202223031-3b95c81cc178 // indirect
 	google.golang.org/genproto v0.0.0-20240227224415-6ceb2ff114de // indirect