fix(composer): problem with locked versions without patch part (#15783)

lib/modules/versioning/composer/index.spec.ts

@@ -150,6 +150,8 @@ describe('modules/versioning/composer/index', () => {
     ${'^5.1'}                 | ${'update-lockfile'} | ${'5.1.0'}        | ${'6.0.0'}       | ${'^6.0'}
     ${'^5'}                   | ${'update-lockfile'} | ${'5.1.0'}        | ${'5.2.0'}       | ${'^5'}
     ${'^5'}                   | ${'update-lockfile'} | ${'5.1.0'}        | ${'6.0.0'}       | ${'^6'}
+    ${'^0.4.0'}               | ${'replace'}         | ${'0.4'}          | ${'0.5'}         | ${'^0.5.0'}
+    ${'^0.4.0'}               | ${'replace'}         | ${'0.4'}          | ${'1.0'}         | ${'^1.0.0'}
   `(
     'getNewValue("$currentValue", "$rangeStrategy", "$currentVersion", "$newVersion") === "$expected"',
     ({ currentValue, rangeStrategy, currentVersion, newVersion, expected }) => {

lib/modules/versioning/composer/index.ts

@@ -216,7 +216,7 @@ function getNewValue({
     newValue = npm.getNewValue({
       currentValue: normalizeVersion(currentValue),
       rangeStrategy,
-      currentVersion: normalizeVersion(currentVersion),
+      currentVersion: padZeroes(normalizeVersion(currentVersion)),
       newVersion: padZeroes(normalizeVersion(newVersion)),
     });
   }