Repurpose test_release.yml as a launcher

.github/workflows/test_release.yml

@@ -0,0 +1,25 @@
+name: Run release tests from PyPI and Conda-forge
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'The Euphonic release version to test e.g. 0.6.1'
+        required: true
+
+jobs:
+  pypi:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./.github/workflows/test_release_pypi.yml
+        with:
+          version: ${{ inputs.version }}
+
+  conda-forge:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./.github/workflows/test_release_conda.yml
+        with:
+          version: ${{ inputs.version }}

.github/workflows/test_release_conda.yml

@@ -1,5 +1,11 @@
 name: test-release
 on:
+  workflow_call:
+    inputs:
+      version:
+        description: 'The Euphonic release version to test e.g. 0.6.1'
+        required: true
+
   workflow_dispatch:
     inputs:
       version:

.github/workflows/test_release_pypi.yml

@@ -1,5 +1,11 @@
 name: Test PyPI release
 on:
+  workflow_call:
+    inputs:
+      version:
+        description: 'The Euphonic release version to test e.g. 0.6.1'
+        required: true
+
   workflow_dispatch:
     inputs:
       version: