Bumping version to 1.9.0b1 and generate changelog #2904

Job	Run time
code-quality	1m 49s
build packages	21s
unit test / python 3.8	1m 28s
unit test / python 3.9	1m 33s
unit test / python 3.10	1m 24s
unit test / python 3.11	1m 27s
unit test / python 3.12	1m 38s
verify packages / python 3.8 / ubuntu-latest	31s
verify packages / python 3.9 / ubuntu-latest	27s
verify packages / python 3.10 / ubuntu-latest	27s
verify packages / python 3.11 / ubuntu-latest	25s
verify packages / python 3.12 / ubuntu-latest	33s
verify packages / python 3.8 / macos-12	50s
verify packages / python 3.9 / macos-12	41s
verify packages / python 3.10 / macos-12	42s
verify packages / python 3.11 / macos-12	48s
verify packages / python 3.12 / macos-12	1m 8s
verify packages / python 3.8 / windows-latest	1m 53s
verify packages / python 3.9 / windows-latest	1m 49s
verify packages / python 3.10 / windows-latest	1m 38s
verify packages / python 3.11 / windows-latest	1m 36s
verify packages / python 3.12 / windows-latest	2m 8s
	25m 16s

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