Fetch all tags, as required by setuptools-scm

.github/workflows/main.yml

@@ -40,7 +40,10 @@ jobs:
             python: "3.8"
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
+      with:
+        # Needed to fetch tags, which are required by setuptools-scm.
+        fetch-depth: 0
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
@@ -62,7 +65,10 @@ jobs:
     needs: build
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
+      with:
+        # Needed to fetch tags, which are required by setuptools-scm.
+        fetch-depth: 0
     - name: Set up Python
       uses: actions/setup-python@v2
       with:

changelog/830.trivial.rst

@@ -0,0 +1 @@
+Fixed failed deploy of ``3.0.0`` release.