feat: Jumper T15 support (#5113)

Co-authored-by: 3djc <3djc@gh.com>
Co-authored-by: philmoz <phil.a.mitchell@gmail.com>

.github/workflows/actions.yml

@@ -49,6 +49,7 @@ jobs:
           - pl18
           - pl18ev
           - t12
+          - t15
           - t16
           - t18
           - t8
@@ -97,7 +98,7 @@ jobs:
           - nv14;el18
           - pl18;pl18ev
           - t12
-          - t16;t18
+          - t15;t16;t18
           - t8;zorro;pocket;mt12;commando8
           - tlite;tpro;tprov2;lr3pro
           - t20;t20v2;t14

.github/workflows/nightly.yml

@@ -19,7 +19,7 @@ jobs:
           - nv14;el18
           - pl18;pl18ev
           - t12
-          - t16;t18
+          - t15;t16;t18
           - t8;zorro;pocket;mt12;commando8
           - tlite;tpro;tprov2;lr3pro
           - t20;t20v2;t14