lib internal serializartion: Drop support on PHP < 7.4, update dev deps

The library will practically no longer run on outdated
PHP versions. PHP 7.4 support is kept and tested as this
is the version used in WMF environments.

Also updated libraries used in tests to versions
compatible with modern PHP.

Bug: T381168
Change-Id: I8447d14f4ff69291f6df226817430dbd8bda4df3

.github/workflows/lint-and-test.yaml

@@ -8,7 +8,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                php_version: [ '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4' ]
+                php_version: [ '7.4', '8.0', '8.1', '8.2', '8.3', '8.4' ]
         steps:
             - uses: actions/checkout@v4
             - name: Setup PHP

composer.json

@@ -27,18 +27,19 @@
 		"irc": "irc://irc.libera.chat/wikidata"
 	},
 	"require": {
-		"php": "^7.0|^8.0",
-		"wikibase/data-model": "~9.0|~8.0",
-		"wikibase/data-model-serialization": "~2.0",
+		"php": "^7.4|^8.0",
+		"wikibase/data-model": "dev-master",
+		"wikibase/data-model-serialization": "dev-master",
 		"serialization/serialization": "~4.0|~3.2"
 	},
 	"require-dev": {
 		"phpmd/phpmd": "~2.3",
 		"phpunit/phpunit": "~8.0",
-		"data-values/common": ">=0.1 <0.5",
-		"data-values/geo": ">=1.0 <4.0",
-		"data-values/number": ">=0.1 <0.10",
-		"data-values/time": ">=0.1 <0.9"
+		"wikibase/data-model-services": "dev-master",
+		"data-values/common": "~1.2",
+		"data-values/geo": "^4.5.1",
+		"data-values/number": "~0.13",
+		"data-values/time": "~1.2"
 	},
 	"autoload": {
 		"psr-4": {