Bump actions/setup-go from 5 to 6 (#318)

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 5 to 6.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/libc.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v5
-    - uses: actions/setup-go@v5
+    - uses: actions/setup-go@v6
       with: { go-version: stable }
 
     - name: Benchmark

.github/workflows/test.yml

@@ -31,7 +31,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v5
-    - uses: actions/setup-go@v5
+    - uses: actions/setup-go@v6
       with: { go-version: stable }
 
     - name: Format
@@ -175,7 +175,7 @@ jobs:
     steps:
     - uses: bytecodealliance/actions/wasmtime/setup@v1
     - uses: actions/checkout@v5
-    - uses: actions/setup-go@v5
+    - uses: actions/setup-go@v6
       with: { go-version: stable }
 
     - name: Set path
@@ -196,7 +196,7 @@ jobs:
     steps:
     - uses: docker/setup-qemu-action@v3
     - uses: actions/checkout@v5
-    - uses: actions/setup-go@v5
+    - uses: actions/setup-go@v6
       with: { go-version: stable }
 
     - name: Test 386 (32-bit)
@@ -217,7 +217,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v5
-    - uses: actions/setup-go@v5
+    - uses: actions/setup-go@v6
       with: { go-version: stable }
 
     - name: Test
@@ -229,7 +229,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v5
-    - uses: actions/setup-go@v5
+    - uses: actions/setup-go@v6
       with: { go-version: stable }
 
     - name: Test