CI: pin rust version to 1.79.0

Stable release 1.80.0 has a regression causing compilation errors:

  error[E0282]: type annotations needed for `Box<_>`

Pin stable version to 1.79.0, since we don't need anything later than
our MSRV anyway.

Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>

.gitea/workflows/build_debian_package.yaml

@@ -27,7 +27,7 @@ jobs:
           - build: linux-amd64
             arch: amd64
             os: ubuntu-latest
-            rust: stable
+            rust: 1.79.0
             artifact_name: 'linux-amd64'
             target: x86_64-unknown-linux-gnu
     steps:

.gitea/workflows/builds.yaml

@@ -26,7 +26,7 @@ jobs:
         include:
           - build: linux-amd64
             os: ubuntu-latest
-            rust: stable
+            rust: 1.79.0
             artifact_name: 'meli-linux-amd64'
             target: x86_64-unknown-linux-gnu
     steps:

.gitea/workflows/lints.yaml

@@ -32,7 +32,7 @@ jobs:
         include:
           - build: linux-amd64
             os: ubuntu-latest
-            rust: stable
+            rust: 1.79.0
             target: x86_64-unknown-linux-gnu
     steps:
       - uses: actions/checkout@v3

.gitea/workflows/manifest_lints.yaml

@@ -33,7 +33,7 @@ jobs:
         include:
           - build: linux-amd64
             os: ubuntu-latest
-            rust: stable
+            rust: 1.79.0
             target: x86_64-unknown-linux-gnu
     steps:
       - uses: actions/checkout@v3

.gitea/workflows/test.yaml

@@ -32,7 +32,7 @@ jobs:
         include:
           - build: linux-amd64
             os: ubuntu-latest
-            rust: stable
+            rust: 1.79.0
             target: x86_64-unknown-linux-gnu
     steps:
       - uses: actions/checkout@v3