ICU-22721 Have the testdata folder trigger CI actions for both icu4c & icu4j

.github/workflows/cifuzz.yml

@@ -8,6 +8,7 @@ on:
       - '**.cpp'
       - '**.cxx'
       - '**.h'
+      - 'testdata/**'
       - '.github/workflows/**'
   push:
     branches:
@@ -19,6 +20,7 @@ on:
       - '**.cpp'
       - '**.cxx'
       - '**.h'
+      - 'testdata/**'
       - '.github/workflows/**'
   workflow_dispatch:
 permissions: {}

.github/workflows/icu4c.yml

@@ -12,11 +12,13 @@ on:
       - 'maint/maint*'
     paths:
       - 'icu4c/**'
+      - 'testdata/**'
       - '.github/workflows/**'
   pull_request:
     branches: '**'
     paths:
       - 'icu4c/**'
+      - 'testdata/**'
       - '.github/workflows/**'
   workflow_dispatch:
     # To trigger the Env Test workflow manually, follow the instructions in

.github/workflows/icu4j.yml

@@ -12,11 +12,13 @@ on:
       - 'maint/maint*'
     paths:
       - 'icu4j/**'
+      - 'testdata/**'
       - '.github/workflows/**'
   pull_request:
     branches: '**'
     paths:
       - 'icu4j/**'
+      - 'testdata/**'
       - '.github/workflows/**'
   workflow_dispatch:
     # To trigger the Env Test workflow manually, follow the instructions in

.github/workflows/icu_exhaustive_tests.yml

@@ -19,6 +19,7 @@ on:
     paths:
       - 'icu4c/**'
       - 'icu4j/**'
+      - 'testdata/**'
       - '.github/workflows/**'
   schedule:
     # Runs daily on default branch (main) only.

.github/workflows/icu_valgrind.yml

@@ -13,11 +13,13 @@ on:
       - 'maint/maint*'
     paths:
       - 'icu4c/**'
+      - 'testdata/**'
       - '.github/workflows/**'
   pull_request:
     branches: '**'
     paths:
       - 'icu4c/**'
+      - 'testdata/**'
       - '.github/workflows/**'
 
 # For non-release branches (namely: PRs), only run CI on the most recent commit. Cancel