tf-m-eclair-daily, delta: Use docker image with explicit version suffix

We perform this change consistently over TF-A & TF-M jobs in preparation
to ECLAIR 3.13 upgrade (while leaving a way to easy downgrade if any
issues seen later).

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I55c86774c31f3646ff6498da0ed1970da5748d16
diff --git a/tf-m-eclair-daily.yaml b/tf-m-eclair-daily.yaml
index a94a399..108e613 100644
--- a/tf-m-eclair-daily.yaml
+++ b/tf-m-eclair-daily.yaml
@@ -1,6 +1,6 @@
 - job:
     name: tf-m-eclair-daily
-    node: docker-tf-m-eclair
+    node: docker-tf-m-eclair-3.12
     project-type: freestyle
     concurrent: true
     disabled: false
diff --git a/tf-m-eclair-delta.yaml b/tf-m-eclair-delta.yaml
index 55af62d..505b4a8 100644
--- a/tf-m-eclair-delta.yaml
+++ b/tf-m-eclair-delta.yaml
@@ -7,7 +7,7 @@
 
 - job:
     name: tf-m-eclair-delta
-    node: docker-tf-m-eclair
+    node: docker-tf-m-eclair-3.12
     project-type: freestyle
     concurrent: true
     disabled: false