[openwrt/openwrt] CI: coverity: disable ccache usage

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch openwrt-23.05:
https://git.openwrt.org/15f4d6b2441e47ed63df961c43515cba11da3a7b

commit 15f4d6b2441e47ed63df961c43515cba11da3a7b
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Sun May 28 03:30:12 2023 +0200

    CI: coverity: disable ccache usage
    
    Disable ccache usage for coverity workflow as it may cause side effect
    in the produced bins.
    
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
    (cherry picked from commit 2129ee1879f564a9992a6761d4c9e77077c48e95)
---
 .github/workflows/coverity.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/coverity.yml b/.github/workflows/coverity.yml
index 363ce3a29a..72f39a729b 100644
--- a/.github/workflows/coverity.yml
+++ b/.github/workflows/coverity.yml
@@ -23,6 +23,7 @@ jobs:
       subtarget: 64
       build_full: true
       include_feeds: true
+      use_ccache_cache: false
       coverity_compiler_template_list: >-
         x86_64-openwrt-linux-gcc
         x86_64-openwrt-linux-musl-gcc