Activate github actions on v1.7.4-est branch PRs

Signed-off-by: MichaelMorris <michael.morris@est.tech>

Author: MichaelMorrisEst

.github/workflows/cifuzz.yaml

@@ -4,6 +4,7 @@ on:
     branches:
       - 'main'
       - 'release/**'
+      - 'v1.7.4-est'
 jobs:
   smoketest:
     runs-on: ubuntu-latest

.github/workflows/e2e.yaml

@@ -6,6 +6,7 @@ on:
     branches:
       - 'main'
       - 'release/**'
+      - 'v1.7.4-est'
 jobs:
   kind-linux-amd64:
     runs-on: ubuntu-latest

.github/workflows/scan.yaml

@@ -3,7 +3,7 @@ on:
   push:
     branches: [ main ]
   pull_request:
-    branches: [ main ]
+    branches: [ main, v1.7.4-est ]
   schedule:
     - cron: '18 10 * * 3'
 jobs:

.github/workflows/test.yaml

@@ -6,6 +6,7 @@ on:
     branches:
       - 'main'
       - 'release/**'
+      - 'v1.7.4-est'
 jobs:
   test-linux-amd64:
     runs-on: ubuntu-latest