make workflow reference within local repo

Author: JuliaSprenger

.github/workflows/io-test_dispatch.yml

@@ -14,6 +14,6 @@ on:
 
 jobs:
   call-iotests:
-    uses: Neuralensemble/python-neo/.github/workflows/io-test.yml
+    uses: ./.github/workflows/io-test.yml
     with:
       os: ${{ inputs.os }}

.github/workflows/io-test_trigger.yml

@@ -11,6 +11,6 @@ on:
 
 jobs:
   call-iotests:
-    uses: Neuralensemble/python-neo/.github/workflows/io-test.yml@master
+    uses: ./.github/workflows/io-test.yml
     with:
       os: ubuntu-latest