Update CI scripts to ignore .md changes (#100)

This reduces the load on GHA infra

.github/workflows/build.yml

@@ -4,6 +4,11 @@ on:
   push:
     branches:
       - 'master'
+    paths-ignore:
+      - 'docs/**'
+      - 'papers/**'
+      - 'rfcs/**'
+      - '*.md'
   pull_request:
     paths-ignore:
       - 'docs/**'

.github/workflows/release.yml

@@ -8,6 +8,7 @@ on:
       - 'docs/**'
       - 'papers/**'
       - 'rfcs/**'
+      - '*.md'
 
 jobs:
   build: