Update the name of Lightning additional runners (#910)

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Co-authored-by: ringo-but-quantum <github-ringo-but-quantum@xanadu.ai>

.github/workflows/docker_linux_x86_64.yml

@@ -47,7 +47,7 @@ jobs:
     timeout-minutes: 180
     name: docker::${{ matrix.os }}::${{ matrix.pl_backend }}::${{ inputs.lightning-version }}
     runs-on:
-      group: 'Lightning Additional Runners'
+      group: 'PL Additional Runners'
     steps:
 
       - name: Checkout

pennylane_lightning/core/_version.py

@@ -16,4 +16,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "0.39.0-dev23"
+__version__ = "0.39.0-dev24"