Add Github Manual workflow to bump version

Author: hanwen-cluster

.github/workflows/bump_version.yml

@@ -0,0 +1,38 @@
+# Bump Version workflow that is triggered manually
+name: Bump Version
+
+on:
+  workflow_dispatch:
+    # Inputs the workflow accepts.
+    inputs:
+      pcluster-version:
+        description: 'The target version of ParallelCluster CLI'
+        required: true
+        type: string
+      branch:
+        description: 'The Github branch name'
+        required: true
+        type: string
+
+jobs:
+  create-pull-requests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+        ref: ${{ inputs.branch }}
+    - name: Modifiy Code to Change version
+      run: ./util/bump-version.sh ${{ inputs.pcluster-version }}
+        
+    - name: Create a Pull Request
+      uses: peter-evans/create-pull-request@v6
+      with:
+        commit-message: 'Bump version to ${{ inputs.pcluster-version }}'
+        title: 'Bump version to ${{ inputs.pcluster-version }}'
+        body: |
+          This PR contains version bump.
+          Auto-generated by Github Action
+        branch: versionbump${{ inputs.branch }}${{ inputs.pcluster-version }}
+        delete-branch: true
+        labels: skip-changelog-update