Update repository condition for PR auto-update job (#918)

* Update repository condition for PR auto-update job

Signed-off-by: Matty Widdop <18513864+MattyTheHacker@users.noreply.github.com>

* Update repository condition for PR auto-update

Signed-off-by: Matty Widdop <18513864+MattyTheHacker@users.noreply.github.com>

---------

Signed-off-by: Matty Widdop <18513864+MattyTheHacker@users.noreply.github.com>

Author: MattyTheHacker

.github/workflows/pr-auto-update.yml

@@ -6,7 +6,7 @@ jobs:
   pr-auto-update:
     name: Automatic PR Updater
     runs-on: ubuntu-latest
-    if: github.repository == 'CSSUoB/cssuob.github.io'
+    if: github.repository == 'CSSUoB/cssuob.github.io' && github.actor != 'dependabot[bot]'
     permissions: 
       pull-requests: write
       contents: write