Install German locale for testing build

Author: jim-easterbrook

.github/workflows/build-linux-27.yml

@@ -32,6 +32,7 @@ jobs:
           CIBW_BEFORE_ALL: >
             yum install -y zlib-devel expat-devel gettext-devel
             libcurl-devel libssh-devel &&
+            localedef -c -i de_DE -f UTF-8 de_DE.UTF-8 &&
             cd libexiv2 &&
             cmake -B build-linux -D CMAKE_BUILD_TYPE=Release
             -D CMAKE_INSTALL_PREFIX=build-linux/install

.github/workflows/build-linux-28.yml

@@ -40,6 +40,7 @@ jobs:
             libcurl-devel libssh-devel brotli-devel &&
             rpm -Uvh inih*.rpm &&
             dnf install inih inih-devel &&
+            localedef -c -i de_DE -f UTF-8 de_DE.UTF-8 &&
             pip install ninja &&
             cd libexiv2 &&
             cmake --preset linux-release