hotfix the endpoint issue (#226)

hotfix the endpoint issue, add the script to automatically release it and fix unit test ubuntu version (for latest 3.6 cannot be find)

Author: antolo-arch

.github/workflows/pypipublish.yml

@@ -0,0 +1,45 @@
+name: Publish Python
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  tests:
+    name: run tests
+    uses: ./.github/workflows/unittest.yml
+  build-n-publish:
+    name: Build and publish Python 🐍 distributions 📦 to TestPyPI
+    needs: [tests]
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@master
+      - name: Set up Python 3.10
+        uses: actions/setup-python@v3
+        with:
+          python-version: "3.10"
+
+      - name: Install pypa/build
+        run: >-
+          python -m
+          pip install
+          build
+          --user
+      - name: Build a binary wheel and a source tarball
+        run: >-
+          python -m
+          build
+          --sdist
+          --wheel
+          --outdir dist/
+          .
+      - name: Publish distribution 📦 to Test PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          password: ${{ secrets.PYPI_TEST_KEY }}
+          repository_url: https://test.pypi.org/legacy/
+      - name: Publish distribution 📦 to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          password: ${{ secrets.PYPI_KEY }}

.github/workflows/unittest.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         python-version: ['3.6','3.7', '3.8']

Adyen/client.py

@@ -190,11 +190,11 @@ def _determine_checkout_url(self, platform, action, path_param=None):
         if action == "paymentsResult":
             action = "payments/result"
         if action == "cancels":
-            action = "/cancels"
+            action = "cancels"
         if action == "paymentsCancelsWithReference":
             action = f"payments/{path_param}/cancels"
         if action == "paymentsCapture":
-            action = f"/payments/{path_param}/captures"
+            action = f"payments/{path_param}/captures"
         if action == "paymentsReversals":
             action = f"payments/{path_param}/reversals"
         if action == "paymentsRefunds":