[CI] Fix label check (#2827)

# Motivation

The label check workflow doesn't seem to work properly.

# Modification

This PR fixes it.

# Result

Proper label checks.

.github/actions/pull_request_semver_label_checker/action.yml

@@ -1,9 +1,20 @@
-name: 'Pull request semver label checker'
-description: 'Checks that at least one semver label is applied to the pull request'
+name: 'Pull request Semantic Version label checker'
+
+description: 'Checks that at least one Semantic Version label is applied to the pull request'
+
+inputs:
+    token:
+        description: 'A GitHub token'
+        type: string
+        default: ${{ github.token }}
+
 runs:
     using: "composite"
     steps:
       - name: Check labels
+        shell: bash
+        env:
+            GH_TOKEN: ${{ inputs.token }}
         run: |
             gh pr view ${{ github.event.number }} --repo apple/swift-nio --json labels \
             | jq -e '[.labels[].name] | any(. == "semver/major" or . == "semver/minor" or . == "semver/patch" or . == "semver/none")'

.github/workflows/pull_request_label.yml

@@ -1,16 +1,16 @@
-name: PR
+name: PR label
 
 on:
     pull_request:
         types: [labeled, unlabeled]
 
 jobs:
     semver-label-check:
-        name: Semver label check
+        name: Semantic Version label check
         runs-on: ubuntu-latest
         timeout-minutes: 1
         steps:
             - name: Checkout repository
               uses: actions/checkout@v4
-            - name: Check for semver label
-              uses: ".github/actions/pull_request_semver_label_checker/action.yml"
+            - name: Check for Semantic Version label
+              uses: ./.github/actions/pull_request_semver_label_checker/