Upgrade Go version on CI workflows. (#211)

Author: ajnavarro

.github/workflows/gen.yaml

@@ -9,7 +9,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.21.x
+          go-version: 1.23.x
 
       - name: Checkout code
         uses: actions/checkout@v5

.github/workflows/lint.yaml

@@ -9,7 +9,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.21.x
+          go-version: 1.23.x
 
       - name: Checkout code
         uses: actions/checkout@v5

.github/workflows/releaser.yaml

@@ -20,7 +20,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: 1.21
+          go-version: 1.23
           cache: true
 
       - uses: sigstore/cosign-installer@v3.9.2

.github/workflows/test.yaml

@@ -9,7 +9,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.21.x
+          go-version: 1.23.x
 
       - name: Checkout code
         uses: actions/checkout@v5
@@ -23,7 +23,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.21.x
+          go-version: 1.23.x
 
       - name: Checkout code
         uses: actions/checkout@v5