Use the released mcuboot 1.7.0 instead of the release candidate

Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: Ia0b90b6b8bbe7d1e8fa5c0865e702c09bc4852e4
diff --git a/tf-m-cppcheck.yaml b/tf-m-cppcheck.yaml
index c99760e..c989be6 100644
--- a/tf-m-cppcheck.yaml
+++ b/tf-m-cppcheck.yaml
@@ -60,7 +60,7 @@
           default: 'https://git.trustedfirmware.org/mirror/mbed-tls.git'
       - string:
           name: 'MCUBOOT_REFSPEC'
-          default: 'refs/tags/1.7.0-rc1'
+          default: 'refs/tags/v1.7.0'
           description: |
             Specify which MCUboot version to use
             refs/heads/master    : Pick up latest master