docs: replace @main with @x.y.z to enforce proper versioning

- Replace all @main references with @x.y.z placeholder
- Forces developers to use actual version tags instead of main branch
- Prevents mindless copy/paste of potentially unstable code
- Encourages proper semantic versioning practices

Author: DerekRoberts

README.md

@@ -26,7 +26,7 @@ Only nodejs (JavaScript, TypeScript) is supported by this action.  Please see ou
 # Usage
 
 ```yaml
-- uses: bcgov/action-test-and-analyse@main
+- uses: bcgov/action-test-and-analyse@x.y.z
   with:
     ### Required
 
@@ -112,7 +112,7 @@ jobs:
     name: Test and Analyze
     runs-on: ubuntu-24.04
     steps:
-      - uses: bcgov/action-test-and-analyse@main
+      - uses: bcgov/action-test-and-analyse@x.y.z
         with:
           commands: |
             npm ci
@@ -137,7 +137,7 @@ jobs:
     name: Test and Analyze
     runs-on: ubuntu-24.04
     steps:
-      - uses: bcgov/action-test-and-analyse@main
+      - uses: bcgov/action-test-and-analyse@x.y.z
         with:
           commands: |
             npm ci
@@ -167,7 +167,7 @@ jobs:
             triggers: ('backend/' 'charts/backend')
     steps:
       - uses: actions/checkout@v5
-      - uses: bcgov/action-test-and-analyse@main
+      - uses: bcgov/action-test-and-analyse@x.y.z
         with:
           commands: |
             npm ci
@@ -194,7 +194,7 @@ Has the action been triggered by path changes? \[true|false\]
 
 ```yaml
 - id: test
-  uses: bcgov/action-test-and-analyse@main
+  uses: bcgov/action-test-and-analyse@x.y.z
   with:
     commands: |
       npm ci