github/build: don't run build on tags

This is almost always redundant.

.github/workflows/build.yml

@@ -3,7 +3,19 @@
 
 name: Build Python package and docs
 
-on: [ push, pull_request ]
+on: 
+  push:
+    tags-ignore:
+      - "*"
+  pull_request:
+    paths:
+      - doc/**
+      - src/**
+      - poetry.lock
+      - poetry.toml
+      - pyproject.toml
+      - setup.cfg
+
 
 jobs:
   build:

.vscode/settings.json

@@ -49,4 +49,7 @@
     "python.analysis.extraPaths": [
         "jedi/src"
     ],
+    "yaml.schemas": {
+        "https://json.schemastore.org/github-workflow.json": "file:///home/david/work/pybricks/pybricks-api/.github/workflows/build.yml"
+    },
 }