Add support for the part:pytest label

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

.github/ISSUE_TEMPLATE/bug.yml

@@ -61,6 +61,7 @@ body:
         - Tools to configure nox (part:nox)
         - Tools to configure protobufs (part:protobuf)
         - Tools to configure the CI (part:ci)
+        - Tools to configure pytest (part:pytest)
     validations:
       required: true
   - type: textarea

.github/keylabeler.yml

@@ -27,3 +27,4 @@ labelMappings:
   "part:model-only": "part:model-only"
   "part:nox": "part:nox"
   "part:protobuf": "part:protobuf"
+  "part:pytest": "part:pytest"

.github/labeler.yml

@@ -69,3 +69,9 @@
       - "src/frequenz/repo/config/protobuf*"
     all:
       - "!tests*/**"
+
+"part:pytest":
+  - any:
+      - "src/frequenz/repo/config/pytest"
+    all:
+      - "!tests*/**"