chore(gha): only run workflows on specific changes (#17)

- Adds `paths:` to github actions workflow files, so that we're only
executing workflows on relevant changes

Author: vrivellino

.github/workflows/chart-test.yml

@@ -1,4 +1,8 @@
-on: pull_request
+on:
+  pull_request:
+    paths:
+      - 'charts/aks-node-termination-handler/**'
+      - '.github/workflows/chart-test.yml'
 
 jobs:
   lint-test:

.github/workflows/e2e.yml

@@ -1,4 +1,11 @@
-on: pull_request
+on:
+  pull_request:
+    paths:
+      - '**/**.go'
+      - 'go.mod'
+      - 'go.sum'
+      - '.github/workflows/e2e.yml'
+      - 'Makefile'
 
 jobs:
   e2e:

.github/workflows/govulncheck.yml

@@ -1,4 +1,10 @@
-on: pull_request
+on:
+  pull_request:
+    paths:
+      - '**/**.go'
+      - 'go.mod'
+      - 'go.sum'
+      - '.github/workflows/govulncheck.yml'
 
 jobs:
   govulncheck:

.github/workflows/test.yml

@@ -3,6 +3,11 @@ on:
     branches:
       - main
   pull_request:
+    paths:
+      - '**/**.go'
+      - 'go.mod'
+      - 'go.sum'
+      - '.github/workflows/test.yml'
 
 jobs:
   test: