chore(deps): update dependency go to 1.26

.github/actions/setup-go/action.yml

@@ -13,7 +13,7 @@ runs:
       uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
       with:
         check-latest: true
-        go-version: "1.25"
+        go-version: "1.26"
 
     - name: Verify setup
       shell: bash

.github/workflows/golangci-lint.yml

@@ -19,4 +19,4 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@1e7e51e771db61008b38414a730f564565cf7c20 # v9.2.0
         with:
-          version: v2.6.2
+          version: v2.9.0

.golangci.yml

@@ -118,6 +118,11 @@ linters:
           disabled: true
         - name: comment-spacings
           disabled: true
+        - name: var-naming
+          arguments:
+            - [] # AllowList
+            - [] # DenyList
+            - - skip-package-name-collision-with-go-std: true
         - name: range-val-address
           disabled: true
         - name: unhandled-error

core/tracker/inclusion.go

@@ -687,12 +687,7 @@ func (a *InclusionChecker) checkBlock(ctx context.Context, slot uint64, attDutie
 
 	block := eth2Resp.Data
 
-	var found bool
-	if block != nil {
-		found = true
-	} else {
-		found = false
-	}
+	found := block != nil
 
 	a.checkBlockFunc(ctx, slot, found)