ci: Run t/ tests

Issue: https://progress.opensuse.org/issues/155188

.github/workflows/test.yaml

@@ -0,0 +1,13 @@
+---
+name: 'Test'
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: perldocker/perl-tester
+    steps:
+      - uses: actions/checkout@v4
+      - run: make test-t

Makefile

@@ -8,7 +8,7 @@ update-deps:
 	tools/update-deps --cpanfile cpanfile
 
 .PHONY: test
-test: test-tidy test-critic test-yaml test-author
+test: test-tidy test-critic test-yaml test-author test-t
 
 .PHONY: test-tidy
 test-tidy:
@@ -25,3 +25,7 @@ test-yaml:
 .PHONY: test-author
 test-author:
 	prove -l -r xt/
+
+.PHONY: test-t
+test-t:
+	prove -l -r t/