Update Gradle Wrapper Action v1.0.20

Update changelog for v1.0.20 (#681)

v1

Update v1 tag to v1.0.20

Update Gradle Wrapper Action v1.0.19

Update changelog for v1.0.19

Update Gradle Wrapper Action v1.0.18

Update changelog for v1.0.18

Update Gradle Wrapper Action v1.0.17

Update changelog for v1.0.17

Update Gradle Wrapper Action v1.0.16

Update changelog for v1.0.16

Update Gradle Wrapper Action v1.0.15

Update changelog for v1.0.15

Update Gradle Wrapper Action v1.0.14

Update changelog for v1.0.14

Update Gradle Wrapper Action v1.0.13

• Added base-branch input parameter.

Update Gradle Wrapper Action v1.0.12

• repo-token input parameter is not mandatory anymore, and it defaults to GITHUB_TOKEN if not specified. Additionally, token authentication in git commands has been fixed.