conan: update conan recipe versions

conanfile.py

@@ -17,35 +17,29 @@ class Exiv2Conan(ConanFile):
                       )
 
     def configure(self):
-        self.options['libcurl'].shared = False
-        self.options['libcurl'].with_openssl = True
-        self.options['gtest'].shared = False
+        self.options['libcurl'].shared = True
+        self.options['gtest'].shared = True
 
     def requirements(self):
-        self.requires('zlib/1.2.11@conan/stable')
+        self.requires('zlib/1.2.11')
+        self.requires('libcurl/7.75.0')
 
         if os_info.is_windows and self.options.iconv:
-            self.requires('libiconv/1.15@bincrafters/stable')
+            self.requires('libiconv/1.16')
 
         if self.options.unitTests:
-            self.requires('gtest/1.8.1@bincrafters/stable')
+            self.requires('gtest/1.10.0')
 
         if self.options.webready and not os_info.is_macos:
-            # Note: This difference in versions is just due to a combination of corner cases in the
-            # recipes and the OS & compiler versions used in Travis and AppVeyor. In normal cases we
-            # could use any of the versions.Also note that the issue was not with libcurl but with
-            # libopenssl (a transitive dependency)
             if os_info.is_windows:
-                self.requires('libcurl/7.69.1')
-                self.options['libcurl'].with_openssl = False
-                self.options['libcurl'].with_winssl = True
+                self.options['libcurl'].with_ssl = 'darwinssl'
             else:
-                self.requires('libcurl/7.64.1@bincrafters/stable')
+                self.options['libcurl'].with_ssl = 'openssl'
 
         if self.options.xmp:
             self.requires('XmpSdk/2016.7@piponazo/stable') # from conan-piponazo
         else:
-            self.requires('Expat/2.2.6@pix4d/stable')
+            self.requires('expat/2.3.0')
 
     def imports(self):
         self.copy('*.dll', dst='conanDlls', src='bin')

samples/CMakeLists.txt

@@ -107,8 +107,6 @@ if (EXIV2_ENABLE_WEBREADY)
             target_link_libraries(conntest PRIVATE ${CONAN_EXE_LINKER_FLAGS_LIBCURL})
             if ( MSVC ) 
 			    target_link_libraries(conntest PRIVATE Crypt32 Ws2_32 ${CURL_LIBRARIES})
-			elseif (NOT APPLE)
-                target_link_libraries(conntest PRIVATE CONAN_PKG::OpenSSL)
             endif()
         endif()
     endif()

src/CMakeLists.txt

@@ -168,8 +168,6 @@ if (EXIV2_ENABLE_WEBREADY)
             target_link_libraries(exiv2lib PRIVATE ${CONAN_EXE_LINKER_FLAGS_LIBCURL})
             if ( MSVC ) 
                 target_link_libraries(exiv2lib PRIVATE Crypt32)
-            elseif (NOT APPLE)
-                target_link_libraries(exiv2lib PRIVATE CONAN_PKG::OpenSSL)
             endif()
         endif()
     endif()